I need advice

Hello good people. so I have been in this relationship for 2 months 22 days today as of today. I met this guy and fell hopelessly in love with him. over the two months I realused he was drifting apart. anytime I'm with him his moods changed and he became very moody and sorta depressed. so I recently found out that he has been chatting up other girls and yet he'd go on for even 4 days without talking to me. I'm I fooling myself that I am in a relationship or what? And how do I move on?