Please give your thoughts on this! lol

Sooo what do you guys think about other women who are either your SO friend or cousins wife/girlfriends feeling a little to comfortable with your man??? lol I know what your think what do I mean we'll let me give you an example and see if you can relate or if I'm just being crazy. Well me and my fiancé have been together 6 years and friends with each other about a year and a half before we started going out so we tell each other everything. Well my fiancé' s friends wife always calls and try's talking with my fiancé about what's going on between her and her husband who let me remind you is his friend lol I know right.. he has never talked to her before knowing his friend or ever was her friend to say that they can talk to each other like that. Well at one point we used to live right next to each other and she calls my fiancé and tells him meet her by the dumpster! He of course tells me and says what do I do I told him to ask her what she wanted and if she can come to our house to talk instead... so he did and she was very hesitant to come over to our house, after he convinced her to come over she comes in and sees me and of course I stayed in the living room well they talked and she just went on and on about how her husband ( my fiancé friend) watches porn and she doesn't know what to do and all of this and me and my fiancé were sitting there like is this chick serious. An she kept telling him don't tell him I told you.. so in my head I was like what is this chick doing coming and venting to my fiancé about personal stuff between her and her husband! Well ya so after that I brushed it off but then comes to find out she's always trying to get a hold of my fiancé and will even answer the phone when he calls his friends phone to talk to him... so idk? what do you guys think? Is it harmless or should i just be careful with this girl I'm not worried he would cheat on me with her but you never know girls are scandalous... and recently she found out he was cheating her in there own home and snapped the pick of the condom rapper to there other friend telling him look what I found.. so should I leave it alone or try and get to the bottom of this weird relationship that she's trying to have with my fiancé??? Please leave your comments below ⬇️