I deserve better, right?

So ladies I need your opinions on a matter that’s been bothering me recently.

I’ve been in a friends with benefits situation with an ex of mine for a few months.. Let’s call him M. When we decided on sleeping together we never said we’d be exclusive, but I never was with anyone else but him.

We both work together and I’m a pretty friendly person, so the other day I was chatting with a male coworker that I’m pretty good friends with. My man saw us chatting and I suppose he perceived it as flirty because that same night without asking me if anything was going on between us, said that I’m being really flirty with him and said that he and I should stop fucking around- over text.

Now M and I are really not the talk about our feelings type, we’ve never discussed how we feel for each other.. but I know that I definitely have feelings for and that he also does for me. But he just accused me of being flirty and talking to other people without even talking to me about it.

When I tried to explain the situation, he wouldn’t respond to my texts. I’ve tried to see if we could talk about this in person but he refuses to give me a straight answer.

I’ll attach the screenshots to this conversation and pleaseee let me know what you think!

I feel that I’m the only one putting in the effort to work this out and that his jealousy is overbearing/unhealthy. I fear that this “relationship” is pretty toxic.. I really care for him but I just want others’ opinions so I know I’m not going crazy here!