Bf caught feelings for co worker

i few days ago i made a post here saying how i wasn’t getting what i needed in my relationship and that bf has never met my parents or anything after 3 years. i still loved him deeply and didn’t want to leave him but i also didn’t want to stay in a relationship where there’s no effort being put into it. so i tried talking to him last night about my needs and wants and said it doesn’t seem like it’s going anywhere. he agreed and then proceeded to tell me how he and his co worker has had repressed feelings for each other but are both in relationships. it was the girl he talked about constantly and he even told me she looked like me a while ago. he wanted me to work with him too so he could focus on me instead. he also told me he didn’t love me the way he used to. i just feel so hurt and broken. it’s not the first time he’s caught feelings for another girl while we’re together and not telling me, i feel so stupid for giving him the change to do this again. he’s had feelings for months, stopped loving me months ago, and still kept me around kissing me, fucking me, and telling me he loved me.