Is it cheating if you guys break up and see other people and then get back together?

sounds like you totally deserve him.

if he's toxic like you say and you went back to him then you obviously didn't learn the first time.

does it really matter what he thinks if he's an awful person?

it certainly makes no difference what anyone else thinks.

first consider if you are safe both physically and mentally being with this dude. any questions regarding cheating whilst on a break are immaterial.

to claim anyone, that is toxic or awful, to be a friend of any kind is a bit messed up in itself.

a better double question that you could ask yourself is "why in the dickens did you ever go back and coming to the conclusion you have about him this second time, why are you still there?"

i wish you good fortune in moving on.

No, it's not cheating. Once you've broken up you're single and can do as you please. 

Time to leave him for good this time.

That’s totally not cheating.

Then why are you back together?

If you really broke up, then it wasn't cheating.

However, if you really broke up....then it would be a stupid idea to be dating him now.

So you screwed up somehow.   Either you shouldn't have been sleeping with the other guy, or you should not be sleeping with your guy now.

You have to define what the break is. Is it a "break?" This connotates that there is still a relationship that needs to mend. A "break up" has connotations that there is zero intent about getting back together.

If he’s so awful why are you trying to get back with him? Just wondering. In my opinion it really depends. If you two were talking to each other during the break up and you were making it seem like you just needed a break, I would consider that cheating because you are being sneaky and in context making it look like you are being faithful. If you two cut contact and it didn’t seem like you two were going to get back together at the time, then I wouldn’t say it’s cheating.