This has happened to me. It sucks!!!
You have to be honest and true to yourself. I said "what the fuck dude" he said "what". You seriously lied about everything! You try to trick people into having sex with you. Fuck you. I turned around and left. As i walked away i said "completely wasted my time asshole"
Listen, You can not let these assholes get away with this. If they succeed they will keep doing it.
I started sucking off my best straight bud about 6 mos ago. We do it all the time now. He dropped a hint a few times so i went with it. It is incredible!! He got on my computer one day and started watching porn. He said "hey can you help me out? I was on my knees and he came fast. The next time he came over, i had the computer screen on the same place he was before (i bookmarked it). He said do you mind if i get on your computer? This time it took a lot longer and it was hot! He was shocked at how much i was into it. "damn you really perved out on my cock he said" Now we do it every time he comes over. I LOVE IT.
The trick is not to take it to far. I don't even take out my cock. You have to make sure he knows you are "just helping out a bud". He is not interested in seeing your cock. It is not awkward at all, and if anything we are closer.
When you masturbate, what ever you think about is what you are. I mean if you think about sex involving men or penis, you are gay. It's that easy. The fact that you are asking the question is a good indicator as well.