SpellcasterI I disagree with you completely; yes, some love spells are difficult to remove, and yes some do have long-lasting effects but that is not always the case.
SpellcasterI, I disagree with you about all love spells lasting forever; Let's say for example, if a high school girl casted a love spell which allows guys pay to see her in a different light, starts having negative thoughts while the spell is taking effect and she is getting all this attention, she might start to think about whether it is the spell or her causing these guys to notice her, and therefore, feel guilty about casting the spell; guilt, turns into thoughts about wishing that she never cast it at all. So, if she starts thinking all these negative thoughts, the spell could stop working within a certain period of time because she is thinking negative thoughts and wishes she never cast it in the first place.
Therefore, she ends up reversing the spell subconsciously through her thoughts.
I hope this helps and I also hope I didn't offend anyone with my post.