Feeling restricted

So.. my ex bf broke up with me about 3 months ago. We were together for two years.

Now... we are friends. But.. I like this guy. And I've liked him for a while anyway. Like.. kinda just a girly crush. Now I really like him.

But I have a problem. I feel like my ex will hate me if I start dating this guy. And I was friends with my ex for years before we started dating. So I dont want to lose that. Bc its not like we ended on bad terms.

But this guy... I really like him. But I feel like im holding myself back bc of my ex....