How to Get Your Ex Back Opening Move

Hi.there my name is ronette.im 38yrsold.just broke up with my bf.just a week ago.we been together almost 8 yrs. not married yet.but hes separate.im single when i meet him. i know in first place that hes married then separate which is she accept me.eventhouth is no good to commet adultery.and it say to the bible. i love him so much even the kids there accept me its been a long year that i really serve them,and i get all my love caring trust hoest communication.everthing so good.no problem at all. then this girl just show up recetly then it yurn suspeciuos to me then i caugth them i nto my eyes first just obsevre themthe moves.oh my god i dont believe what i saw .theres just massages my bf. he said nothing happen .tell i ask him again. then he tell me throuth.until now my heart is on very pain,its hard for me forget coz im not cheating in the first place,even my last b.f. never cheating on them.i m give everthing im done.i m so depress.cant eat. cant sleep.crying every night.i dont wanna talk to anybody.even the kids are worry bout me.but him its k. so i decided to leave him but so hard for me.i dont know what to do.i feel like he dont love now.coz of these gir,that it just happen. cnfront him. and he said that he fell sorry coz he has sex with her,which not suppossed to.but he hes a guy.i said i dont even care.im want himso bad.coz 8yrs we been together.so pls help me.i want to go leave him. but i feel like he dosent love me no more.in i feel that.hes still wnt me.