My heart hurts

I have had a bf for almost two years now but he breaks up with me very often and no one knows we’re together because I used to talk to his brother and now his brother hates me and when his brother did know we were dating he literally ran around our high school screaming that his brother is dating a whore. The last time we broke up, I thought I was done for good and started seeing this guy who works out at the gym I work at. The sex was amazing but I felt like that’s all he wanted from me even though he kept telling me that he wants to date me and all this stuff. I’d told him about the relationship I’d just gotten out of and how I was emotionally messed up from it and he still continued to talk to me. The entire gym knew he was trying to talk to me and random members would come up to me everyday and tell me to stay away from him and that he’s a player and a bad person but I’ve never been the type of person to just believe what people say. Then I’d have his friends tell me he’s talking to other girls and I’d talk to the girls and they’d tell me that he says the same things he says to me to them. So I gave him his clothes back and told him to get out of my life and got back together with my bf. Now I’m with my bf and for once he’s being wonderful and all I can think about is the guy from the gym and how he lied to me and has been playing games with me for months and even when confronting him about it he lies to my face. Now we both have each other blocked on everything but I’m so upset and I don’t know why. I love my bf but this guy playing games with me has literally crushed me and I feel like now it’s starting to effect my relationship because I don’t want to talk to my bf because I’m upset about this guy. I feel super stupid and have an entire gym in my business. I’m just sad because he lies to my face and makes me feel so stupid and all I want to do is yell at him every single time I see him but I can’t because it’s at work and I will look crazy in front of my bosses, coworkers and the entire gym.

I have a finsta where I would normally post stuff like this for my friends to see but they all think that I’m just overly attached to the gym guy and need to let it go but now my bf follows it and I just feel so used and played by this boy who still looks me in the face everyday, tells me he likes and and then tells hundreds of other girls the exact same thing and lies to me about it.