need advice 🙄

this morning i woke up to a message from the father of my child. we were together about 2 years, & those 2 years were very challenging for me because we went through so much. when i first met him he told me he was 19, turned out he was 22, i was very upset when i found out because i didnt understand what made him lie about being younger than he was. he explained it like i asked his age first & he didnt know i was legal so he felt it would be better if he said 19 & i said 17 because that isnt that far apart & he thought i was so beautiful & he just wanted a shot. but he was wrong, i was legal, i was 18. i wasnt surprised when he told me i didnt look legal because i get that allot, i have my older cousins still come up to me at holiday get togethers and family events asking how old i am and when i tell them 19 they are so surprised. but i still didnt feel like that was a reason for him to lie to me, so that was the beginning of me not trusting him.

a while after we seemed to be growing closer, & everything seemed to be going good, he would call me his gf. i never called him my bf back because he just called me his gf, he never asked me out. i felt like if he never asked me out it would be one of those relationships where the guys like "we're together but we aren't together" & they want to do relationship things but not take the full responsibilities that come with the relationship. finally he asked why i never called him my bf, it was kinda an argument, but i got my point across & he eventually asked me to be his girlfriend. shortly after my little sister, was 15 then, is now 17, found pictures of him & a girl & a baby boy on Facebook (ive never had Facebook) but she screenshot the pictures & sent them to me. the captions never said anything bad it would be emojis & the pictures were never of them kissing or anything, just of them at family events, her & him side by side the girl holding the baby. so when i brought the pictures to his attention then he said it was his cousin & little cousin. we checked the girls relationship status it said single but i knew he was lying i felt it in my gut, so my sister added her on snapchat & she seen on her story them laying in the bed together & then he would be saying he loves his son so much (on her story). but i didnt bring it up right away i wanted more proof. then me & my sister noticed that days he would blow my off when we had plans saying they called him in to work to cover someone elses shift saying it was mandatory he came in, or saying he didnt have gas id say i have gas & hed say well i dont even think i can make it to you, but he would be with her. before i could bring the situation to his attention we were on our way out to eat, she followed him with a friends car & when he got out to pump the gas she got out the car & started yelling. the baby about 6 months old was in the back seat screaming at the top of his lungs. they were arguing, she was telling him he has her out here looking stupid, he was saying how your my baby mom we arent together im just around for my son, she tried to slap him & he grabbed her hand, he told her she has herself looking stupid shes at the gas station making a scene & the babies crying, he told her to go get the baby, she continued to yell he went to the car grabbed the carseat she followed him still yelling, he put the baby in the backseat she came to my door & i was on my phone she tried to open my door saying she was gonna slap the shit outta me then he pushed her & locked the car door. he got in the car she was yelling for him to give her the baby back & we drove off. we went to my place i told him that he could stop lying & just be honest because i already seen her snapchats and i know thats his son. he started telling the truth that it was his son but by then it was too late i already had it made up in my mind that i was done with him & the lies & stress. he told me its only his baby mom nothing more between them & shes always acting "loud & ghetto" like that. & thats why he was attracted to me because i was the opposite. i told him i didnt blame her, the snaps show otherwise & if he never made her feel that comfortable she wouldnt have been acting like that. after that he'd text me & call me & we would talk sometimes. most of the times i had work. i would try to get extra hours so i didnt have to talk to him. then he started coming over sometimes to see my 3 brothers, 18, 17 & 15. he would try to come to my room & talk to me but we never got anywhere because i was still very upset with him.

about a week or two later he had gotten arrested for something he says he didnt do, so id go to the court dates with his mom because she asked. he got released so i guess he didnt do it but while he was in there, about 2 months, he would write to me when he wrote to his mom. the first letter he ever wrote looked similar to this text message minus the part about the baby, thats why i dont really know if i should trust him. and once he got out of jail he started cheating with his baby mom, again. the first time i found out it was only text messages and they were gonna meet up. he said he had stopped and it was nothing just texting. so stupid for believing him. i caught them together one time at his moms house. i walked in on them & then just turned & left. when he came to my house he said that it didnt make sense got us to be together if i was going to the airforce. i had applied for the airforce when me & him first broke up a little bit before he got arrested. i didnt get accepted because of a medical reason, i swear he isnt the reason i didnt go, i would never let a guy stop me from doing something i want to do. but i told him why i didnt get accepted & he tried to switch it saying he would leave her alone he's sorry someone brought it to his attention as if i was keeping it from him & it hurt him so he wanted to hurt me, and i told him well lack of communication costed you your relationship. i got rejected from the airforce before he got out of jail, before he even sent me the first letter so i didnt think it was somethings i needed to tell him if we werent together but if be had questions he shouldve just asked. i let him & his baby mom be together. he found out she was cheating on him, she was pregnant by another guy & they broke up.

after a while we got back together & everything was going good until i found out i was pregnant. he started getting distant, then i get a text from his phone from some girl saying "idk what you guys thought you had or what he's been telling you but im blocking your number" i didnt even reply. i posted it on here & and allot of people were saying let him go he isnt worth it. so when he did text me again i told him i couldnt do it anymore & we should co parent because we keep trying and we arent good together. & thats what we've been doing, hes just been acting like hes okay with that he has never been to the doctors with me. nothing. and now this.. so i just need advice, he was my first real boyfriend & i do love him but i dont know. weve been through too much & ive went through too much pain. & i dont want to go through any of this again.