How To Treat Dry Lips?

Hi there.

I have reasonably big lips for a male. The inner part of my lips get really dry and chapped really quickly. I need to use Vaseline all the time (at least every hour). Drinking water doesnt really help. Im even too scared to go out with a girl, as the inner parts of my lips dry very rapidly, therefore, I don't think Im ever able to kiss someone.

Any advice would be good.

Thanks!