on a real tip.
and I know this will sound clech'e.

If guy doesnt respect you fro simply being you,then is he worth you time?
If you let him know your gay, and he dont want anything to do with you, then so be it, thats on him obviously being homophobic.
Seen as he chill with you, whilst he thinks your straight, finding out your gay shouldnt change his perspective.

Just be you bro, if cunts dont like you for you,then fuck them.