<human>: Can you provide a brief rundown of the text in within 3 sentences?

Okay first off, I'm 24F and he is 32M. We have been dating for 4 years, the past 2 we have lived together. It started out the first 3 years we devoted all of our time together. We loved spending every minute together. Sex was great, ranging from 3-4 times a week. 

We just recently started having problems since our work schedules do not work with each other. He works when I don't and I work when he doesn't. (This could be the problem) When we have time together he seems uninterested to do anything with me. He makes no move to do anything sexual. (Neither do I, because I feel like he is uninterested and i'm tired of being turned down). In the last 3 months we have had sex 3 times. He says I am a very attractive woman, i'm just confused at this point. We have had the "talk" about how I need more sex and I'm not quite sure if it is going to change. I asked for attention but I feel as if I shouldn't have to beg for attention, it's something that should freely be given in a relationship.

My boyfriend looks at porn and masturbates more than having sex with me. I know he is not cheating with anyone else (for a fact). Sex is not the only issue, he has no motivation to do ANYTHING. He does not want to ever have kids or get married.(I'm okay with the no kid part) I'm not pointing out his flaws, he has very few. I love him, and he is my best friend. He's the guy I WANT to spend the rest of my life with, he just makes it SO much more difficult. I want it to be like it was before, and I want us to have a future. I just need some advice or really anything because I'm stuck.
<bot>: Boyfriends libido sucks/he lacks motivation for change, but before recently he was the perfect SO. I'm confused should I stay or go?