If you are talking about the straight guy sleeping next to the gay guy, then there isn't anything to worry about. Everyone is capable of having friends, both same-sex and opposite-sex, without having sexual thoughts about them. So sleeping next to your gay friend is nothing different than sleeping next to your straight friend.
If you are talking about a straight guy having sex with a gay guy, it too is nothing to worry about. It is estimated that 33% of men will have a same-sex sexual encounter to the point of ejaculation in their lifetime, and since only an estimated 10% of people are gay, this means that most people who experiment do not turn out gay.
If you are a straight guy and had sex with a gay guy, and you enjoyed it, it does not necessarily mean that you're gay. It could mean that you're gay, but it could also mean that you're bisexual.
The whole topic of sexual orientation is so personal and intricate that it is impossible to give you a complete answer to your question in this type of format. But regardless, you shouldn't worry too much. You should just do what you feel comfortable with, and nothing more, and don't worry about what the "implications" are. Just follow your heart, and you should be OK.
Are you looney? Why would you want your girlfriend to sleep with anyone?!
IT sleeps were it sleeps
It's not right! Even if you could trust her, your girlfriend can be there for her friend without sleeping with him. If he's in emotional pain they could sit on the couch and she could put her arms around him to comfort him, but there is no reason whatsoever for going to bed. You need to let your girlfriend know this is wrong! If her friend wants her to stay overnight to comfort him, then she can sit in a chair while he sleeps and keep an eye on him.
Doing that doesn't make you much of a friend. Does he know how little of a friend you really are?
The present tense forms of the word "sleep" are: I sleep you sleep he/she/it sleeps we sleep they sleep
yes, of course a discus sleeps. Every fish sleeps.
it sleeps in night
Everyone sleeps
He sleeps at night
sleep with him straight away and brag about how good he was to his parents
he sleeps peacefully, with a boulder on his back he sleeps peacefully, with a boulder on his back
Crab sleeps undergound and sleep as long as it wants