Firstlove

3 clues
Childhood sweetheart?
Source of some nostalgia
Grade school crush, often
Similar answers:
Afirst
Aintlovegrand
Amanfirstwalksonthemoon
Anythingbutlove
Aprilfirst
Aprilthefirst
Artlover
Artlovers
Atfirst
Atfirstbite
Atfirstblush
Atfirstbrush
Atfirsthand
Atfirstitwasadeadlock
Atfirstsight
Atfirstsite
Atfirstyoudontsucceed
Befirst
Caimanfirst
Calledoutatfirst