Hi Alex,
There is nothing wrong with being a virgin. We all were at some point.
How big is your penis? The average size for an ADULT male is 5 - 5 1/2". It can grow into your early 20's.
Don't compare yourself to others. We all develop at different rates/times.
It really is what you do with it that counts. Focus on HER, not you. Let your body go along for the ride. Talk to her, ask her what she likes/doesn't like. Sex the first few times is usally very awkward and not like what you've seen in porn.
Any girl that you are close enough to to have sex with should ever make any negative comment about your size. You wouldn't say anything about her "parts' now would you?
Finally, have CONFIDENCE in yourself. Be proud of your PENIS and what it can do.
Good luck - use protection!
That's 4.3" so you're getting close.
You are not being rude.
Yes you can have a normal sexual relationship. The vagina can accommodate a wide variety of penis sizes. Don't think you are not normal - you are.
It may grow, it may not grow. We can't tell. It's all up to your DNA.
Please don't focus on your size. Be proud of your penis. Be confident in your abilities. Size does not matter as much as how you use your penis. Lots of guys with big penises are big pricks if you catch my meaning.
Really, self confidence will help you more than a big penis will.
Good luck.