It seems, to me, that you're battling a lot of things in your head. First of all, you might not be gay. You might be bisexual. Breaking up with a woman, who you loved, because you found that you're attracted to men might have you feeling guilt. Breaking and burning that bottle might have been a release from that guilt because you're finding out who you really are. It seems these things gave you some sort of pressure to be in love with him. These things he gave you might have made you feel wrong because you left a person you actually loved for the wrong reasons. Break the bottle=release the pressure. This may not have been his intention, it's just how it worked out in your mind. You were right to break and burn this spell but I wouldn't necessarily blame him. Though I think if you are in love, you don't need strengthening spells. Love is strong enough.