Feeling Bad after rounds of sex.

My neighbour (guy)and i were pretty cool until he started confessing his love to me. Anytime he's around me, he forces to kiss me and I've said it times without number that I'm not interested in having any relationship with him because it wont be healthy for us(becausewe livetoo close). Also because i know he likes women and i see the ladies visit anytime. One way or the other i began enjoying his kisses. The next step, he forced me to have sex with him even though i willingly did not want to do it because i know my rate of jealousy. As time went by, i confessed my love to him and we started havin sex yet he never stopped bringing in women to his place claiming they're just his friends. Unfortunately for him, i was in his room taking a nap and i overheard him speak on fone with a lady i presumed to be his new gf, asking how their relationship (both him and the lady)is going and when the lady to visit him. Now i didn't take it serious until the lady appeared on the said date he agreed for her to visit and that was when i concluded that he has a gf outside of us. Looking at how things where moving, i tood him we need to breakup because i feel he has someone and thats hurting me because i see the said lady around but he refused and said they're friends. Now, i told him that relationship wont work with them because i feel cheated, i sacrificed and made couple of men that came around to go because of him but didn't get why he couldn't do that but cheat in my face. Told him if I'm not happy, not sure he wouldn't too. He should enjoy it while it last because it wont last as far as I'm concerned here. Again, i saw them walking together and i by passed them but i didn't say hello to them and the guy is furious because he thinks I've disrespected him/them. Guys, how will you feel to treat this matter if you where in my place. I'm so hurt right now. 😫