<human>: I'm 20 years old and she is 18 turning 19 in a month's time. The age difference is not huge, but our lives have been very different. I have lived abroad for a year, traveled a fair bit and just had a larger variety of experiences, it seems, she has only really seen her hometown and hasn't ventured too far away or experienced anything that different. 

I love her and her lack of life experience doesn't turn me off whatsoever.  It's just I don't know how to go about the relationship, we have such different perspectives and I want to show her how I see things and encourage her to grow up and try new things, but I don't want to 'change' her and try to project someone new onto her. 

Over the past few days I've been sending her a lot of messages trying to explain what I mean, and I've ended up going in circles and confusing myself. It boils down to feeling on a separate level from her due to the different things I've done and experienced and due to my age, and I don't know what to do about it or whether it's something that will change or that I can help to change.

Could you distill the essence of the text into 1-3 sentences?
<bot>: I feel older than my SO and I feel insecure about it. I'm looking for advice from other people's past experiences.