Well, if you're in that situation, you need to confront them and ask them why they would betray you in such a way. Then you need to think whether or not they're right for you.
if you cheated on her you really should stop seeing her boy
If you have a girlfriend and a boyfriend, then you are cheating on both of them.
maybe, maybe not.If he spends more time with the girl he is cheating on.
You can tell for sure that your girlfriend is cheating, by catching her on the act with her lover.
he is totally cheating.
I don't dream about your girlfriend
Only if you want your girlfriend to think you're cheating on her and get mad. It depends on your relationship, and the attitude of the girl you're going out with. flirting with other girls is viewed as cheating or the beginning of cheating, whereas others see it as a bit of harmless fun. Flirting with other girls can indicate a lack of respect for your girlfriend. You do need to ask your girlfriend what she thinks. She might be okay with it, she may ask you to stop. If she asks you to stop flirting with other girls and you can't or won't stop, then maybe you aren't mature enough to be in a relationship yet.
then he must be cheating on you if he has a girlfriend? i mean if he likes you and has a gf then he must be cheating and wanting you?
I'm not sure to be honest but if you goto him and tell him you know about him cheating and he wishes to continue to do so then he isn't worth your love and feelings. no male or female who cheats should be in a relationship.
One of the first thing I noticed in the question is the use of the plural use of girlfriend. So, this may mean that you have more than one girlfriend which would make you the person cheating. Next, you need to sit down and talk to your girlfriend. Are you trying to control her?Do you require her to "check in" with you ? If you are being controlling and need to stop.
Follow her
stalk her