Hi,

I think it's totally fine to feel reserved, it's only been 4 weeks and the L word is in the picture. Generally, people get to know each other for a few months before they determine whether they're ready to exchange those words.

I met 2 guys that started off with I love you within 2-4 weeks. 1st guy ended up being a habitual cheater and the 2nd guy was great but he intimated me with his L word, suffice it to say that I was honest with him and told him I was going through stuff (I had just gotten over depression and started to piece my life together again), he was receptive to that, I told him let's take it slow. Maybe, you should do that too.
It didn't work out at the end, we're both Alpha's and there was some issues that he has yet to recognize.

There's nothing better than to be honest with the person. If you're not there, it's ok and he should understand that.