basically... girl friends with this girl she has a boyfriend me and her have witty banter flirty banter we have exchanged semi lewd snaps dont talk much occasionally see each other i joke around saying she should leave her boyfriend for me she jokes and says no she touches me a lot in a non sexual way very touchy i added her back on snap after removing her

i wanna bang her but I dont know how to go about it, she has a guy but he cheats and is away with work often. She knows he cheats