[Jamie89]

If you want to come out then I'd still do it, regardless of the situation with your cousin. I find it hard to imagine that anyone will think you're making it up to steal his thunder, but if they do think that, then that really isn't your problem it's theirs. There'll always be loads of reasons not to come out, and being worried about how people might react is probably the same for everyone, but you have to kind of put all that to one side and not think about how they're going to react because it's not about them it's about you, their reactions don't really matter.