You shouldn't give up on romance in general just because of one [censored]. I was royally screwed over too (although not quite as royally as you) and so I'm just not looking for someone. I won't stop myself from forming an attachment if a genuinely nice girl comes into my life, but I'm not going to push it.
Don't become jaded by bad apples, but also don't leave yourself too vulnerable. Wait for the right person.