LolBe 20!
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No feelings is a mustMenage a trois aren't all they're cracked up to be, Shaggy. The only time I would recommend those would be if none of the people involved had feelings for anyone else involved. But definitely drinking and smoking. If for no other reason than just to have the experience, not necessarily even doing it more than once if they don't like it. I would say have had at least one relationship longer than 6 months. Done at least one thing you've really really regretted. That's all I can think of.