No. You're not in love with the person but the IDEA of that person. Online, people only let their best qualities show, so you only see the best of that person. You only see what they want you to see. In real life, they can have a mouth with #NoFilter. Please keep this in mind. I'm not saying everyone online is horrible, but everybody lies. All the best etc.
Yes, just don't let your hopes up. talking behind the screen is different, talking face to face and personal is different as well. You might fall in love with your own imagination you build of him.its different in real life. internet is full of pretentious liars. so don't trust that much of what they tell about themselves.its possible, been there and it took me 4 years to realize its a stupid idea. but don't lose hope. some had their happy endings its just not for everyone. coz not everyone are that honest as they claim to be.
Yeah it's possible... unfortunately, because this is hard to deal with it. It has happening to me, I had no idea that it's possible when I started to talk with random people. But I met one guy, who is just like me. I know that it's hard to tell what is true and what is false what he tell and also from my side as well for him.. But we just trust each other.. both. Not only me. We are not couple of course, but really good friends.. even if I wanted it to be different.. And yeah, we are talking daily just daily, we can talk all the time, about very important things and not important things at all :) When we don't talk even only two days, this is strange xD The story is longer of course but not so important here ;) So in my opinion it can be love, but you have to check out only if it's not infatuation.