Mind Boggling

Some things just completely boggle my mind. I just can't wrap my head around some things. I am by no means traditional. I am all for same-sex marriage and same-sex relationships. However...when you want to be in a committed relationship, you should be in a committed relationship. Not a committed relationship with an occasional fling. Three-some? Really? Either commit to somebody, or be single so you can have as many flings as you want without potentially hurting somebody's feelings. And open-relationships/marriages? Same concept....I just don't get it. I realize that obviously it works for some people...I just don't get it.