I think the online love you are talking about is the match.com business. That is different, it is set up to meet people in your area, who match your interests. The majority of those people don't have an online relationship before pursuing eachother in real life. They normally have small talk and set up a date to meet in a public place. (I know this because my mom loves that stuff.)
IDK cuz sometimes there are some occasionss where people find their true love on the internet n sometimes it jut fails, but IDK i guess its 50/50 so yeah i think there is ome posability ^_^
I personally don't believe in it. I could not fall in love with someone who has never held my hand, kissed my cheek or fell asleep next to me. Maybe some people fall in love...but it's not real love. I think it's the idea of love they fall into.