I think my friend has that. Me and my homies straight up hook him up with a girl, and he is like "no no no" Like we even get her to say she wants to just suck his dick and fuck him, it always ends the same. He's not gay.. I think he's just afraid/really shy..
It actually really saddens me. Its also making me think I'd rather see him get laid instead of me- because I'm an awesome friend like that. lol