Should I delete him on facebook?

I've been asking myself this question for a few days now. But every time i go to do it I keep refraining. Argh! Help guys what would you do in this situation..... I started seeing this guy from Spain around August 2010 up until now basically. Had a lot of great times, a lot of romance, laughter, sweet words etc etc. Thinking everything's going wonderfully. Even started learning some spanish! Deep down i always wondered if he was actually playing with me. Very charming good looking spanish guy, over in london, dating me for 4 months and never said anything about us being in a "relationship". But he was so sweet!? Drove me nuts. Last time we saw each other was xmas eve, and that was nice. Then I invited him to a big staff party in January, where everyone dresses nice, there's a dinner and lotsa booze etc. Invited him as my guest, said he was coming. 3 hours before the party says he's been in bed sick and cannot come. Felt incredibly let down and upset and didn't know what to believe. From then on no real contact, just stupid "pokes" from him on FB and messages on the chat but I just don't know what to believe.... was he using me the whole time?! He acted like a boyfriend, letting me stay in the flat when he was at work, all these things.... bought me an amazing xmas present... but especially after this party i'm thinking oh do you know what i'm sick of these mind games. He's messaged me today being all "how is your week???? how are you? I've had no credit on my phone... no money" - he's out of work at the moment.... but still.... why isn't he man enough to actually call me again instead of hiding behind a computer screen. Everyone else thinks he's using me. Should i just delete him? He always acted like a boyfriend, then go a week or so without calling me.... Argh. Would it be too harsh to delete him on there? I'm so fed up/upset/angry/confused. Sorry for the long post... had to explain the situation!