16 & I was his side chick 😂

Umm should I feel weird ? So before I say why heres the back story to it the time I was a side chick 😂 It was years ago when I was a junior in high school I started dating this guy named Alex he lived about 15 mins away from me in a town away from me the only time I did get to see him was when I was with friends or when I would invite him to go to church group with me it was like for youth and we would text and talk on the phone that was mostly what we would do my parents didn't allow me to go on dates and all that with boys yes they knew about him I'm glad they didn't let me know that I think of it because he was a true meaning of a F$&k boy 😂 well he met my parents we took him to a church bbq that's what point of my story is our relationship wasn't long a few months mind u at some point of the relationship he wouldn't talk to me for maybe 2/3 days and then say he got arrested hmm I know a lie right   and he and I both so I thought deactivate our Facebooks why ? I don't know we did lil did I know he opened his back on and he had a girlfriend on it a pregnant one mind u we were just 16 😒😒 and when I found out I broke up with him on the spot and I messaged the girl and she knew about me and him like what the hell 🤔🤔 and u still were with him so yeah I was the side chick and I didn't even know and I reopened my Facebook and he got so mad that I was doing good months after him and was happy so he spread rumors that I slept with him when I didn't I was 16 and a VIRGIN !!!! He would tell guys that would try to talk to me things like that when I didn't it made me so angry but I knew it wasn't true and he did as well mind months later he would text me and try to go on dates and talk to me I never replied and recently he sent me a friend request to my Facebook even tho he sees I'm engaged and have a baby like no 😂😂💋 but I noticed we have friends that are common like my finacès older sister and also my finacès sisters friend should I be like weirded out he has them I'm close with both of them but I don't want to ask if they know him in person I don't want them to ask him anything if they do because he was a huge Lier ?? Has anyone been a side piece before lol