Most Helpful Guy
Just be a friend to her. Not a friendszone friend but a friend with sex appeal. Occasionally point out the bad in her man. Find another girl in the meantime (Big Plus) treat her really good and let her see it and subconsciously and consciously she'll compare it to the way her man treats her. Talk about your bf/gfs together. Talk about how your relationship is not that serious and how you're kind of waiting for the right woman to come along. Don't speak bad on your mrs right now for she will think that's how you'd talk about her if she was your girl. Always take the high road. Do boyfriend things for her even though she's with the other guy. Ask her to coffee or breakfast dates or other low key things. Give her birthday presents/christmas presents. Buy her other small gifts occasionally. Show her that you think about her like that. Tell her that you think she's sexy in a nonthreatening way so she associates that feeling to you. You may even want to talk about how great your sex life is with your mrs right now. Just don't get too graphic as it might put her off. Don't ask her about her sex life though. She'll tell you what she feels comfortable with. Damn I miss being a player. I'm retired and married now but I still got skills. Just use them on the wife these days. Good luck player.