How do i know was i being obsess,infatuated,in love or in lust with her?

i use to buy her things alot things that was un my price range i thought about her alot i was nice to her at times but she says i get jealous when other guys would talk to her and i didnt want her to be with anyone but me and she said i was clingy because i call and text her alot was i in love,in lust obsess or infatuated with her