Well, in some cases, a guy may do the following:
These are common things to look out for. If your boy does these things normally then there's no reason for concern.
If the guy have tendency of being good friend with you, while losing interest or having equal interest between his gf and you _______________________________________________________________________ Ask him.
sex
The guy will have to tell you but when you do the guy will most definetly know.
By his behaviour
You be polite to the guy and tell him that you are not interested. It would probably go no further in a simple greeting in conversation, but you never know until you truly meet them.
get her jealous or tell her how you feel
This is very touchy. You need to tell him that you value his friendship too much to risk losing it over a failed relationship, were you two to date.
You can tell in very different ways: • he might not look at you • be very mean to you • show no interest • ignore you • take advantage if you If he's the shy guy, you'll know for sure. :)
if they loose interest in you
Trust me. You will know.
you tell him
If he likes you, you will know.