@mackie678,
I have a few questions :
- why is it at all important that she's had one relationship and kissed 3 guys? Even by age 20, that's a remarkably small number in todays world. Is there a religious or cultural reason this is an issue for you?
- why is it an issue that she is an extrovert and you an introvert? Is it an issue for her? Or for you? Or for you and her?
- are the male friend 'limits' the number of male friends, or the 'quality' of male friendships she has? I don't think you have a right to put a limit of the number of friends a person has. The type of friendship is a bit harder to define.
- if she has only been with one guy, that shows great restraint. Why then would trust be an issue while you are away on business trips?
A few thoughts :
A kiss is only a kiss - it's loving, and it's bonding, and it builds closeness...in small increments. But unless you are investing the kiss with a great deal more emotions (for example, all your hopes in it), that's all it is - a kiss.
I'd be rather sad about any woman who regrets her one past relationship (if it was anything that lasted any length of time). Every part of our life contributes to who we are now.
Personally, you seem to be from a different culture - so asking western advice without even mentioning your culture can invite all sorts of problematic advice.
I'd ask someone closer to home.