You don't have to "play the field" to have bitches jock you.
If they are jocking you, then you say "Leave me alone, I'm married hoe"
It's not that fucking hard.
Why does she even have his number? Obviously some exchange was in place for you to even be talking to such a misguided and whorish girl in the first place.
Like I said, many people shouldn't have gotten married in the first place. There's no problem with fucking around when your single, but don't make someone who cares about you deeply think that you only want to be there for them for the rest of your life. If you ain't ready to commit, then don't fucking commit haha.
It's really not that hard.