Just make sure next time be careful, because some man they don't care. Huh...
Whether it's positive or negative he should be there for you. My bio father left my mom when I was little and I am in my twenties and still haven't heard from him. Maybe the negative test was a good thing if you feel wronged by him?
Don't get pregnant because you (alone of the two of you) think it is a good idea, get pregnant when the two of you have such a rock-solid long-term relationship that *he* is talking about how great it would be to have a child. Sorry, but you really can't wish this on a guy. What he is thinking, if you really want to know, is "She took a pregnancy test? OH NO!!!!!" but he is too polite to say so.