Another couple mentioned that i really like are Batman Returns and Heathers which have elements of love stories to them.
Also just thought of the H.G.Wells/ Jack the ripper time travel film "Time after time" that has a nice love story element.
Might have to have a rethink of my list.
And how about "the man with 2 brains" and "Sightseers", i guess those would count too.
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MIKE: I've got it! Peter Cushing! We've got to drive a stake through his heart!
VYVYAN: Great! I'll get the car!
NEIL: I'll get a cushion.