A dedicated and passionate elementary school teacher attempts to win over his female co-worker but a sexual experience forced upon by a guy challenges everything in his life.

For what it's worth BI CURIOUS is a great title. I dare say it would sell better if the protagonist was female, though ;) (I think the grammar in your logline being clearer would help a lot).

Don't need passionate or dedicated .......maybe

A teacher is attracted to a co-worker but is hindered by a past intimate experience.

Don't need passionate or dedicated .......maybe

A teacher is attracted to a co-worker but is hindered by a past intimate experience.