There are no love spells or returning an ex lover spells that have high rates of success. A majority backfire. As well, the only way a spell like this would truly work would be if the person still has feelings for you. Even then, it'd only be an exxagerated form that is twisted out of form.
An idea would be a use of things used in usual love spells as well as in drawing/conjuring spells. Things like magnets, honey, drawing powders, etc, and then colors like red and pink, pictures of you two together, herbs like violets, lavender, lemons, vanilla, cacao, etc.
It would be very easy to make your own spell, just simply look up items available for you to use in a way that makes sense to you.