I just came out and one of my friends keep asking why I made the decision what do I tell her I don't know how to explain it to her
Explain to her it's NOT a decision and never will be. You are hardwired this way and can't change. That would be my first suggestion. If you have anymore questions post an update.
Tell her it wasn't a hard decision to make, that you were tired of hiding who you really are, and wanted to be happy and live your life. ---------- Post added 8th Jun 2014 at 11:07 PM ---------- Meaning the only decision there was if you wanted to hide and live a lie, or wanted out.
Do you mean she's questioning your decision to come out? Or the decision to "be bisexual"? (some people still believe it's a choice)