Should I say something or leave it alone ?

I just found out that the man I've been sleeping with for a year has a gf.I really liked him although it really was just sex. I definitely wanted more but he nwver had time but still fucked me and I stayed bc I wanted more and hope he'd give me more since I was patiently waiting for him and liked him so much. he Also s kept coming back and made me feel he wanted me when I finally told him I liked him and wanted to get to know him more , spend more time .he was like yes and when I said I felt a strong chemistry that was truly magnetic he said he felt it but agaim he just kinda never had time but we did start talking alot more and countined sleeping together until he cancelled our plans right after I left one am the plan was a whole date night and movie and he just stopped responding abruptly, didn't open my messages. .i checked his social media again bc i knew i missed something .within 10 mins i found her.not even 3 hrs after rolling out of his bed he went right back to her. Had sex with me no protection and was out on a date having fucking breakfast. I saw months worth of shit . correlating trips \ pics but she also is not tagging him but it all made sense. Honestly I always suspected he was dating bc he wasnt trynna put titles on shit And there was some girls items at his house he was able to explain or i simplt didnt bring up to not seem bothered but to find pit he was really dating her going on trips, weekends together, breakfast, couples costumes,walking Their dogs . I felt really fucking down man and stupid .he liked likes her (kinda)? I did ask him if this.was just casual.and if I was reading more into the situation and he said no .I even once asked if he had a gf before I found out . I fell in love with him . he was the First man I took seriously since my divorce and I feel so stupid ,.I waited so long to confront him that by the time he responded I just wanted to be with him .He literally came to my house last week fucked me and then left. held me for two seconds and put his clothes on left never opening a message again .I'm what to do I feel like we did have a connection but I also know I need to him go . Why would he lie like that ? Why not be honest ? do I confront him ? Tell her ?Did he even really like me ? I wanna prove something to myself so bad that this wasnt me being so stupid but a real genuine connection but Deep down I know I played myself.