Is it real?

Can you love someone who you don't actually know and he doesn't even know you exist? I know it sounds completely and utterly stupid but I think I'm in love with an actor :/ In the show he's mainly on there's one or two episodes where he has a love interest and I cannot watch the bits where they are on together, especially one part where he's kissing a co-star, its not out of choice its just that I get such a strong feeling of jealousy its overwhelming, to be totally honest it feels like seeing someone you truly love and want to be with, with someone else. Also if he gets hurt or injured, it makes me feel literally really sad like when a family member becomes injured. Furthermore at one point in the show one of his co-stars has a baby in the show and they talk about whether he's ever thought about having children and it makes me feel all weird and kind of warm inside. I seem to get all the effects that love is said to give you whenever I see him in images or on tv, not just in this one show. I just don't understand it, if I did actually know him I'd say maybe I was in love but I don't and he doesn't even know I exist.