Girlfriend trouble Pleaze Answer?

Hey I've been going out with my girlfriend for almost a month. When we go out on dates and its just us its amazing we have great times. But when we are with her friends (especially her best friend) i feel really awkward, I cant be myself, and i feel like she completely ignores me and just talks to her best friend. Wat does this mean? Should I maybe stop hanginf out with her and her friends and just stiuck to being with her? OOO and this has nothing to do with the other problem but GIRLS would u find it romantic if ur bf brought unexpectedly came to ur house told u to come outside and gave u a rose?