Gemini female rat and a Capricorn horse man

I'm the female rat born June 14th 1984 and my Capricorn guy was born January 11th 1979. He is a very hard worker but seems to have a wandering eye. Especially with social networking. On Instagram the majority of what he follows is very beautiful women whether they are in the local area that he's met out and about or from another country. These woman were followed before we met me since we have not dated long. Another thing is the way he would open doors by allowing himself first instead of me. I know some don't believe in this but I've raised my son to open the door for anyone that happens to be around. Of course I'm a communicative Gemini and he seems to be quiet and not quite say what he's thinking. That also drives me crazy. All these red flags and yet I can't seem to let him go even though I've tried. There's just something about him. Please help me I'm so confused.