Car-pooling Shmooling!

I don't carpool to my job. It is so far away and my hours are different each day that it is difficult to plan. I am one that likes to be able to do my grocery shopping on the way home or stop off somewhere. I would not be able to do that if I carpooled. Heck! I just like being alone in the car before and after work. It is my time to unwind. When B and I only had one car I hated having to have him drive me. I use my drive time to unwind after work so I don't lose it when I get home. With B in the car - I never got to unwind. He hates rush hour traffic with a passion and the ride home was always more stressful to me than a whole day at work.

About a month ago as I was getting out of my car at home, there was a guy I had just met the week before at work. He was a newer employee in a different department. I saw him again when he moved into the complex this month. He was outside smoking at work one morning when I came in and asked what time I got to work. I told him 8-ish. His shift started at 8:30. He was currently catching the bus at 5:30am. He said it would be good if we carpooled. I thought about it and since I am not on the phones and do not have a set schedule (one day I leave at 7pm the other I leave at 3pm) and told him that it would not work for the evening but maybe the mornings. Every time I saw him he brought up the carpooling. Each time he asked for my apartment number (he forgot it each time). He had a pool party yesterday and I talked to him then about what time I leave. Since I did not want to disturb hubby by having this guy come to the apartment and wait for me, I told him to wait out by my car. I told him I leave at 7:30/7:35am. I told him to just wait for me and I would come running out because I am usually running late. This morning I ran out to my car around 7:40. He was not in the lot. I sat in my car and waited. I then drove to the front and side parking lots but he was not there. I drove back to the parking lot I use and waited a bit. By 8:55 I had to go. So I left. I feel bad because this guy's shift starts at 8:30 and since he is on the phones they are pretty strict. But I got to work late because of this. I got here at 8:15. Granted this is not too bad for me but today my boss came in early (8am instead of 11am) to meet with me. I now have to stay late tonight to make up for this morning. I am hungry but I don't want to leave my cube in case I run into this guy and he is angry. My personality is such that I cannot handle when people are angry at me. I have an interview this morning and really don't need the stress.

So what do you think I should tell him? Should we try again tomorrow? Was I wrong in leaving without him? I don't know the rules of carpooling, so was I supposed to be late for my shift to wait for this guy?