extremely busy with and interested (in an activity, book etc)

preoccupied; attentive to

feeling or expressing pleasure, contentment, satisfaction etc

in high spirits; satisfied

to be very attracted to a person; to enjoy something very much

addicted

to be filled with a wild and inexperienced feeling of love for a person

in love with; obsessed

so deep in thought, so carried away by feelings, that one is unaware of other things

absorbed, fascinated