Hey!! plz help me out. i luv my bf vry much. v hv been 2gether since 1 n half year.?

but my prob is dat he doesnt do sweet things for me like other boys do 4 dere gf. once i found him flirting wid other girl so i broke off. he cried alo. nd apologised.. so i make up wid him again. i think he luvs me.. plz help me out how to know he is serious for me or not? nd how to make him do sweet things for me??