Ok, so I've been seeing this guy for a few weeks, we've been out a couple of times on dates, there's been kissing, hand holding, cuddling etc. He was even questioning if we are properly going out (like bf/gf). Now we were supposed to go out on Friday, and we arranged where, just not when. So it got quite late (about 6.30) until i txt him saying "I guess we're not meeting up?" and he replied from a mates phone saying his phone was broke, he had a load of coursework to do and he would let me know as soon as so we could "get back on track" (his words) does that seem an excuse? It's quite out of character really as he is a lovely guy and is always txting me and stuff. Now this was Friday, its now Wednesday. Should I be concerned?