Thanks for all the advice and different point of views. I though I'd be lucky to get 1 or 2 responses. I hadn't expected more than 40. It sure offers some food for thought.

Some people said: live with it, people don't read their email. Well, I send at least 20 mails a day at the daytime job, and I know quite well how much the average person reads from your mail and that when you ask a direct question, it usually gets answered. I've also seen the same email issues with customers.

What does he bring to the table? Well, basically he handles all things I prefer not to. Does he bring something unique that can't be replaced? No. It's pretty hard to find someone who wants to be an entrepreneur though and who wants to put in hard work that might make a profit later. For me it seems to be an almost impossible task to find someone who wants to be an entrepreneur, that is a complement to my skills, who I get along with and is fairly local to me.

I know lots of competent people, but none of them are interested in becoming an entrepreneur unfortunately.

I know from experience though that when working solo, once the fun technical part is over, it's too easy to find another interesting technology or idea and start hacking at that. I've got several of such unfinished projects. That's a big motivator for me to get a co-founder.

Concerning that it seems that we both like to be boss: well, we both have a management function (during the daytime job) where we need to coordinate/steer people. We both are used to being right.

I don't want to bring any lawyers to the table though and I don't want to just run with the project and leave him in the cold (although I could). I wouldn't want him to do that to me, so I won't do that to him. I also know that this would make me feel too guilty, which isn't worth it.

I thought having a working product and paying customers is pretty much, but the comments on here have made me realize that this is just the beginning. Which is it, we'd have to grow the number of paying customer at least 10-fold to be able to replace our current income from the daytime job.

Basically I've decided to give it 1 month and then re-evaluate. I'm planning on putting all issues in a notebook or file somewhere together with the date, because I tend to concentrate fully on work and family and forget about what happened when. Sort of a diary, to get a better view on things.

Thanks for all the advice and insight!