Don't be shy, man, just go for it! If you knew she liked you back, you should've just told the guy, "Nah, I already have the best view in the house" and then look at the girl and BAM! Smooth as silk.
Here's my story. So, a group of friends and I went to the beach after I got out of work to hangout and watch the fireworks. We got there relatively early, so we got pretty good seats. Anyways, after an hour of messing around, chatting and other stuff this group of girls set up their stuff a few feet away from us. My friends, being the immature college students they are, start making that obnoxious whistle sound and checking them out, while I'm just awkwardly sitting there, pretending to look at my phone. Anyways, they just ignored my friends and just started chatting and whispering and stuff.
Anyways, an hour passed, and my friends started doing dumb things and tried getting the girls' attention by taking their shirts off and then attempting to get a tan. I was so embarrassed that I just wanted to leave, and the girls were just sitting there like "wtf?" After my friends realized they were just making a fool out of themselves, they stopped and we just started chatting. They went to go get some food from the pier and I decided to stay back. While they were gone, the group of girls left as well, except this one girl. I didn't really pay attention since I was just playing Candy Crush on my phone :p when she said "hi" to me. I replied hi back, and I wasn't really sure of what I should do, so I just asked for her name. Let's call her Lauren. Anyways, we started talking about stuff, and then we started getting into this deep conversation about family and stuff, and we just kept talking to each other until my friends came back. I started to freak out inside because I knew that they would do something to embarrass me, so right after she finished what she was talking about, I asked her if I could get her number. (and she said yes!

) After putting her number in my contacts, my friends came back and surprisingly didn't say anything about me getting Lauren's number. I told her I'd call her later, and then the night just went on with chatting with my friends, hanging out, and then watching the fireworks. Before we left, I gave Lauren a quick hug before leaving and then told her I'd call her later, which I will do tomorrow. ^_^
Overall, I had a pretty great day.