Why did Vegeta sleep with Bulma?
When did Bulma and Vegeta start dating?
Why did Bulma break up with Yamcha?
Why did Bulma marry Vegeta?
Did Bulma cheat on Yamcha with Vegeta?
When Yamcha is killed by a Saibamen, Bulma even says that she would have married him if he had survived. How did all go wrong that she wound up with Vegeta marrying her instead? The answer to that is that Yamcha cheated on Bulma— multiple times as a matter of fact.