As someone who is sometimes indeed picked as a friend for how much "fun" I SEEM to be, I advise you to not go this route. As soon as I'm seen as a real person behind the "fun", people jump ship. (No, its not because I'm hiding abusive behavior, rather because its impossible to be "fun" 24/7, yes there's a real person behind the facade.) Its currently happening to me once again and putting me into a tailspin. You'd think I'd be used to it by now, but no I'm not.

No, I'm not controlling, but I think the dynamics are the same. Don't pick a friend based solely on their ability to grab attention or how happy they seem. Are you choosing these people because their happiness transfers to you and makes you happy?

I'm not saying to not choose fun people as friends, rather I'm saying to not make that the only reason you choose them. The negative behavior is going to be found in "lower sugar" people, too.