I need advice please

Me & my bf has been going through rough times & im just really stuck in between still trying or giving up because things aren’t getting better. I’ve been feeling like lately he’s been lying to me & cheating but I dnt have proof because I don’t go through his phone & he’s actually pretty good at hiding things. He told me about something between him and this girl how she grabbed his phone and put her number in it and he claimed he said he had a gf and how she was like not for long etc and he said he deleted it then he said everything happens for a reason maybe God made that happen because she knew it wouldn’t be for long anymore & im just like bitch wtf. He said he asked her do I know u because she’s a “family friend” he hasn’t seen for years he said 11-13 but he’s fucking 20 now. & he said she was with his fam a month ago he just hasn’t seen her in years and I’m like family friends are supposed to be like family not trying to fuck the youngings. He said she had told him he’s cute and grown up and he said that’s what family says. So family grabs ur phone and says we should hang out and u won’t have a gf for long ?..Side piece much. I asked him what store does she work at since he met her at her job at the mall and he wouldn’t tell me and I’m just like if u rlly didn’t entertain her why won’t u tell me the store (i wasn’t going to go there or anything I just wanted to see if he would protect her) which he did. He wouldn’t tell me anything and he said his friends was telling him she’s bad and how he’s being loyal so he wants her. Tf u mean hes being “loyal” he’s in a relationship. His friends always influence him to cheat and u are the company u keep!! He always accuses me of doing things and I don’t do shit to him I think he does that because he’s doing things. But the vibe he gives off, not wanting to post me on social media ( id tell him take a pic of me and he’d say no one needs to see u but me sexy) like shut the fuck up🙄. Ppl don’t even know he has a gf. He acts single if u ask me. But all of this just turns me off because he isn’t denying anything like he knows he entertained her or he has entertained someone before and won’t admit because he always tells me stories like this but he’s also not denying it. But if I even say thank u to a Guy it’s the end of the world. I told him I love him but I’m not In love with him anymore. I don’t trust him & he makes it hard to because he acts so suspicious & sneaky. I also let him know I cant even trust loving him because of the way he acts. We haven’t been in a good spot & he’s telling me stuff abt other females and saying that everything happens for a reason. First of all she disrespected me for even feeling like she’s important enough to say things like not for long and grabbing his phone out of his hand after saying “I have a girl” which he prob didn’t even say & also saying that they should hang out. He told me I’m lucky he even said that because we’ve been arguing like what? .. he told me God prob made it happen because I’m probably doing things behind his back🤦🏼‍♀️. I just have a gut feeling honestly & he always tells me females love him and all this stupid shit. He’s really just a clown at this point and idk what to do I just feel like I can’t trust or believe him. Why even still continue speaking to someone who doesn’t respect ur in a relationship