kabayan... I just felt the need to reply on your thread... all my past girlfriends confessed to me...

You are inlove if...

You include that certain person in all of your future plans...
You see him/her as attractive even if lantaran na sa mukha mo ang flaws niya...
You feel sad/uncomfortable/worried when you cannot feel his/her presence...
You start to change for the better to impress the person...
You start acting for your feelings... or change your beliefs/thoughts to accept the person that you love...

That's just for me though... An opinion... I never felt anything like what I felt for my last ex... We're still friends but I feel so strongly for her... Do you think you're inlove OP? I think it's not always the feeling of happiness when you're with that certain person... It's the feeling of being accepted and being loved... Sorry, malabo...