Love / Virtual Relationship of an Asian girl with a Polish man [43]

Hey all..
I'm an asian girl who dates a polish man..
I actually never meet him in real life,,and we've been in a relationship from 2months ago by a dating site..[ he will visit me on next summer :-) ]

and because it is a long distance relationship,,i'm very often worried him that he will get interested on other girl [oh,,i wish not]

he is a family guy and i think that he is sweet on my family too [ he sing happy birthday on phone for my mom's birthday] ..

i feel like he is almost perfect for me eventhough i never meet him..

we communicate by msn everyday, and also sms..
sometimes i feel like he doesnt really care on me as he rarely send me sms in the day to ask what i'm doing or something like that..

but he often sms me in the day to say that he miss me..
and he always sms me directly right after he get up in the morning.

well,,i want to ask ur opinion about my relationship..

do you think he is serious on me [i mean not playing on me]?
is it a habit for polish guys for not taking care/worried of what their gf doing?
what should i do to make him more moreee love me [hehe] ?