How do I move on?

Question:

Please help me. I was wondering if you could help me out I been with my partner for over five years. We are both near thirty. That time has been a real long journey. The problem is I feel like our love is burnt. He changed into a total jerk -- looking up porn, girls, etc.

Lately, he has been texting this girl constantly day and night. Every time when I text or reply he takes ages to get back to me but when it comes to her, he texts her back instantly. She's married with a kid. I questioned him a couple of weeks ago. "What are you guys talking about?" He says, "We just talking about dogs." Seriously, who texts about dogs 10 hours a day?

He doesn't show much affection to me --only when he wants sex. He's arrogant and he puts me down all the time, and he doesn't understand I have feelings as well. He promises and says this and that, but it never happens.

I'm getting old. I want to be and feel happy in life, but he makes me miserable. We both have differences in what we like. He likes games computers. I like to travel and spend time with family.

He recently bought a dog. She sleeps on the bed even when we having sex. She goes everywhere we go. What happened to our date night? I crave attention. What girl wouldn't want attention from her man? We got an on-and-off relationship and it's so unhealthy. Problem is, I still love him. The sad thing is he broke up with me again via a text message. I want you to advise me on how do I move on and not look back. Is this possible? It's killing me.