Love spells are notoriously iffy, many people consider them wrong because they effect free will, while others believe them to be reasonably okay.
You need to really think of the consequences before you even think about casting. Also a spell written by someone else will not do you much good. With something like a love spell you need a deep connection. A spell written by someone outside of the situation doesn't have the same connection as one written by you.
But please be aware that love spells can go wrong so make sure you are not simply being selfish before you cast one.