Am having an extramarital affair. Me.

Am having an extramarital affair with an child less women we had sex and went up in highs.we hav plan for kids.am so possessive to here and I am not liking her to be online in WhatsApp and talking to her friends and colleges.now she wants me to be away from her as saying that am immensly doubtful in here activities as she is having other affir.complaint to me am restricting here from social activities mingling with others.am always calling her for my happiness now she wants to leve me .saying that am not understanding at all.and am only font of with sex with her and am very much concentrating on her body.but am not able to leve here mentally am very much attached to her.she is saying that am having decease of doubt.she is now trying how to satisfy me and not looking after her family and got compliant from her husband .pls advice me accordingly