Just hit magic for Lovestruck. Smitten and Lost Love were the lucky parents.
I noticed breeding both XO and Lovestruck that I had to use the heart type dragons in the breeding equation.
Infinity (diamond) + Admirer (heart/pink) = XO (heart/pink) 26 hrs.
Smitten (heart/pink) + Lost Love (heart/blue) = Lovestruck (heart/pink/blue) = 27 hrs.