Been with gf for 5 years, how to ask for open relationship?

I’ve been with my girlfriend for 5 years, and I love her to death. But lately, I’ve been feeling bored. I’m not sure if it’s because we’ve been together for so long, or if it’s something else. But I’ve been thinking about asking her if she would be open to an open relationship. I know this is a big ask, and I’m not sure how she’s going to react. I know this is a lot to ask, but I’m hoping someone out there can give me some advice on how to tell my girlfriend about this, I don’t want to lose her, but I also don’t want to stay in a relationship that’s making me unhappy.

Notable comments:

Like this: “I think we should break up ❤️😭”

This isn’t reddit, wrong app

Tc? This is actually an important factor here. If your portfolio is sub 5m dont even think about asking unless youre ok with the relationship ending