Can you be in love with two people at the same time?

She says:

I need someone to explain this one to me because I'm a one man woman. When i'm in love with someone, it's just him and no one else. So I don't understand how someone can carry on a relationship with two people at the same time. Could it be that one person offers different things than the other? And how long does one think they'd be able to get away with loving two people simutaneously?

This topic is very close to home since I just recently dumped a bonehead who dated both me and another women for 9 months!! Okay, okay...I was lame for sticking around that long. Perhaps for me it was the challenge of knowing there was another woman. That's whole other blog in itself. But getting back to this one....the guy told me 4 months into dating that he was falling in love with me. Then proceeded to tell me that the other girl he was seeing told him she was in love with him. You follow? Strange love triangle? How is it even possible to tell someone you're falling in love with them when you're dating someone else too??? So the jerk carried on for 9 months before i finally came to my wits end and dumped his lame ass. AND I let the poor suspecting woman know he was a liar and cheater too.

So the question is....why would he carry this on for so long? Did he truly love the both of us? Or was he playing the both of us? Was she missing something I was able to provide? And vice versa? We were both Asian American women with similar personality traits and a love for our friends and family. But she was 5 feet tall, seemed needy, and according to him aggressive in pursuing him....while I'm 5'8", independent, and a little stand-offish. She seemed more the party girl who likes to show off her goods while I have an unexposing sophisticated style.

So....what's the verdict? Was he in love with the both of us? Or were we completely and utterly duped????