Lately I've had fantasies of letting a mutual friend of me (20yo F) & my girlfriend (21yo MtF) get involved with us sexually. My girlfriend & I have been together for nearly 5 years & we've both confessed to each other that this mutual friend (20 yo M) is HOT ASF. We've both had crushes on this dude. It's not something that either of us are seriously considering, but there's a part of me that would 100% consider making it a serious thing. Have any of you been able to successfully make this happen? How do you even go about initiating this with a friend? How likely is it that your friendship would be demolished over asking for sex? How do you go through the awkward bits of asking for STD testing, etc? ...ATM this feels more like a fantasy that can't work in reality. But I swear to God, if all of us were down for it and there was little to no possibility of our friendship falling apart or things being super weird, I'd probably have a threesome.