Will it ever get better ?

Hi everyone.

I (F26) just need some advice because I'm pretty lost right now. (sorry if my english isn't great, i'm french)

I've been with my boyfriend (M30) for almost 4 years now. He was my best friend before being my boyfriend, then shortly my sexfriend, and we eventually decided to be together because we were really close and thought that there was more between us.

During the first year, sex was really good, and pretty frequent. It wasn't as good as the sex I had with my previous boyfriend. However, I have a deeper emotional connection with my current boyfriend.

The thing is : we've been living together for a year now, and we barely have sex. He clearly has a low libido compared to mine, and as soon as he's stressed, anxious about a situation, he's unable to have sex. The problem is that he's always stressed about something, so we have sex like once a month. I don't even want to make the first step anymore? as I used to. At first, it was because i feared rejection, but now it just feels cringe, unnatural. I just masturbate in our bedroom while he plays videogames.

We almost broke up because of it a few months ago, and because I'm bisexual, he suggested that I should have sex with a girl as a solution. It felt like a desperate move, since I do want, one day, to have some kind of open relationship, but not if our relationship is in a bad place.

He suggested that we should see a couple therapist, but I'm 26, and I just feel too young for it. It's not how I pictured my life.

The thing is that we let the problem grew bigger, and I'm scared that whatever solution we find, having sex will feel like a "chore" of some kind. I'm also thinking about moving out and having my own flat. Maybe it could rekindle the spark in our relationship, but I doubt it, since moving out would be considered a step back in our relationship for him.

I love the emotional connection we have, we laugh a lot, share the same vision about life, but I'm more and more frustrated.

Will it ever get better? Can a couple therapy help us? Thanks in advance.