I Need help,Im in a discrete relationship with this guy....?

Im a married woman who is 29 years of age.I love my husband to death,but he made me betray his trust.He gave 3 girls on the internet his number,I actually talked with a girl who said he been tryin to date her for over 4 years,and this happen this year.He is always home and he is a good father,but I look at him now as being sneaky.So I met this guy I been seeing for about 2 months off and on,nothing serious,but we got intimate and kiss a few times,I visit him about twice out the week.I like every thing about him,hes a good kisser, Its strange but Im start to have a bit of feelings for him now.We talk on the phone alot.I need to know, should I continue this secret affair, or be faithful to my husband. I know who my heart belongs to, I just feel like ,when I found out things about him I say" Two can Play that Game" Ladies you know what I mean? You think Its possible me and this other guy on the side can get serious? My husband dont hang in the streets or go to bars thats why I was shocked