Neither the question nor the answers make any sense independently, let along together.
Did you mean to ask something like "For whom it is the easiest to move on from a failed relationship" ?
Also lesbians are also gay, by definition, if I am not mistaken. Also Lesbians are also girls, so that makes no sense either.
Perhaps you meant to list "Straight boy, straight girl, gay boy, gay girl" ?
Also adding the "Other" option might include more people, so that would be ok as well, but maybe you didn't care about that part, so I have no issue with it.