Depends on the situation. If it's a tiny secret that has little relevance I just end up forgetting about it in a day or so, and if the person who told me asks if Ive kept the secret I just go 'uh, yeah, suuuure!!!' and walk away quickly. If it's a big secret then I try to keep it but at the same time I usually wonder if it's the best idea to keep the secret. Anyway... yea, in general I think I can keep a secret.