Right time to drop the big L

I've been with this man for about 3 months now and I know I love him. I'm just worried it's too soon to say anything. last time I was in a serious relationship I wasn't the one who said it first, so I'm a bit worried about saying it and being it too early or it just not going smoothly. If you can't tell I'm a bundle of nerves. He spends every weekend at my apartment (his work is an hour away, and a long drive for the weekdays)

and we have a strong relationship so I don't know why I would.