My friend's boyfriend wants me....

okay, so I know that sounds conceded, but that's the simplest way to describe my situation. I have not slept with the guy or anything, though the thought has crossed my mind. for the past few weeks he occasionally sends me texts, stops by my house, or gives me "looks" when we are around other people. my friend has even stated that if I cleaned her house, then I could sleep with her boyfriend. crazy I know. here's my big dilemma...i have a boyfriend as well that lives with me, but I feel very unhappy with our sex life and the intimacy of our relationship. after 6 years of not being satisfied sexually, I have thoughts of sleeping with other men to fill my needs. I mean, I'm only human. well, my friend's boyfriend will jokingly talk about sleeping with me (in front of her), and when she is not around, he's very serious about it. part of me LOVES it...he tells me everything I want to hear (like how pretty I am..blah blah - pillow talk I call it). I don't get this kind of positive attention from my bf, so it feels flattering to get attention from another guy. I have no feelings for my friend's bf, I don't want him to leave her for me, or anything crazy like that...but I do think about what it would be like to have sex with him . I'm very curious and now, very confused. I really do want to have no strings attached sex, but not with a random guy I can pick up at a bar. my friend's boyfriend is looking for the same thing...we even talked about the idea of swinging, though I'm not sure all parties involved would like that idea. so both me and him want some great sex that we don't get in our relationships, but we know (or at least I know) how wrong it would be for us to have sex with each other. I'm just battling this sexual frustration and enjoying the new attention that I can't figure out the best answer...another thing, there are kids involved on both sides of the situation, so just breaking up with someone is not a quick fix. any suggestions?