off the top of my head I am going to pluck five well known and well loved 'love songs' out of the ether and then examine the lyrics for sexism now.
Lady in Red - Chris De Burgh
I'm not in love - 10 cc
Wonderful tonight (as it's been mentioned)
I can't live (if living is without you) Harry Nilsson
Nothing Compares 2 U (sung by Sinead O'Connor most famously but written by a man, Prince.)