High school sweet hearts can they last even if there the only person you have been with sexually and romantically?

I would really like perspectives from people who are making it work right now?

im in a long term 6 year relationship with a man I truly want to marry and spend my life with but because of some big ups and downs in our relationship it’s created doubts in my partners mind about our future.

for starters we are both obviously in our one and only serious relationship since high school.

i have had sexual partners when i was young and dumb - mind you literally 15 years old but my partner has only been with me.

this of course has created some insecurity on my partners side which contributes to the doubt of a serious future with me.

he used to believe we would marry but since some major fights and such I think the doubts crept in.

because I love him, I’m prepared to do whatever it takes to help ease his mind that he’s making the right choice to spend his life with me.

this means things like obviously communicate better, and showing him quality’s of a loving wife.

Thats being said this does not incorporate getting with other people or anything like that.

so after this long ramble. I want advice. This whole situation has made me feel sick because I don’t have doubts - ( other than your regular oh he doesn’t take me out enough or get me flowers blah blah). But I’ve never had serious doubts on leaving him.

he's told me he still loves me and it’s a big decision on to stay or go but he definitely has doubts.

SO that all being said. Has anybody been through anything similar. How does one stay with one person for their life? Both romantically and sexually. Is it hard?

when I mean stay together I don’t mean oh we had breaks and got with other people and then found each other again. Because me personally I don’t believe that’s a good relationship.

are their people happily married and only been with just their partner and havnt had doubts or if so did they go away?

High school sweet hearts can they last even if there the only person you have been with sexually and romantically?
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