If cheating was ok, you wouldn't have to keep it from your girlfriend. That's logical.
You can really damage people psychologically by cheating and deceiving them and leave them with bitterness, serious trust issues and relationship problems. Just look around this forum for example!
If my GF wanted to hook up with other guys, I'd want to know so I could make a choice whether I stay or go, whether I sleep with other women etc. If she cheated on me, the deception alone would piss me off so much!
You can really damage people psychologically by cheating and deceiving them and leave them with bitterness, serious trust issues and relationship problems. Just look around this forum for example!
If my GF wanted to hook up with other guys, I'd want to know so I could make a choice whether I stay or go, whether I sleep with other women etc. If she cheated on me, the deception alone would piss me off so much!