"You can have a threesome with me and boyfriend if you want, he said it's cool." - Got sent that in the middle of a normal conversation. Did it on her own accord. Does this indicate anything?

On the one hand she loves this dude apparently. Occasionally brags about him. Occasionally talks about the aftermath of their sex. Showed a picture once. On the other, she tells me how she feels bad because she wanted to go to Spain and fuck hot guys there and now she can't without cheating. Also tells me she's cheated on most of her past boyfriends. Not sure if she's telling me she's a cheater for a reason? Claims she wont this time.

Then I learn he's moving away for a few years tomorrow. They'll see each other once or twice a month. She'll be deprived as fuck.

Could I smash or is this just gonna get me in deep shit? Cheers.