If you knew he was a bum, why were you with him in the first place?
A lot of women don't realize that no matter if they break up with a dude who was a bum, etc, it's still a reflection of themselves and the type of men they attract.
Y'know, when women complain about the type of guys who constantly live in their DMs, it says a lot about themselves; if only bummy and lousy ass dudes are hitting you up and no good/decent quality men can be found, look in the mirror, it means you likely aren't any better than the men you're turning down.
It's like, for example, me being a man; if only thots, hoodrats, hoes, etc., were trying to get with me while good and decent women weren't seeking me out, that'd be a reflection of my character and where I stand in terms of attraction as it pertains to compatibility.