My boyfriend just found out he has genital warts. How do I cope?

My boyfriend found out today that he has genital warts. We were sexually active until he started noticing signs of it. I was tested 2 months ago and negative. He has not had sex with anyone else other than me in about a year. Now, I am going to get tested soon but obviously I am not going to have sex with him right now at all. I have taken this news absolutely hard. I been crying for hours and he was crying earlier and I just been having a hard time keeping my head up through this. The doc told him he could have gotten it from touching someone with it. Shaking hands or whatever. My boyfriend gets tested every year and always been negative. I looked up on every website that its VERY unlikely picking it up from toilet seats and such. You can get it from that within like 2 min of the person on the toilet but anything longer than that, and the virus doesn't survive on the surface. So it appears he got it from shaking hands or that slim chance of the toilet because he swears he hasn't slept with anyone and I believe him 100%. I am going to tell you a little bit about us. I met him after I moved away from home. I moved from my hometown to states away and to a place I knew no one. I met him and we have been joined at the hip. He is my best friend. My only friend. I am in love with him. We talked about getting a place together and even babies. My question is basically how do I cope with this? I been crying for hours and I don't want him to feel like he has "cooties" or something but I also DO NOT want it. He means the world to me. How can I be strong through all of this? What do we do sexually now? This changes EVERYTHING and I need advice.