If you were my daughter or sister and came to me with this issue then this is what I would try to get across to you:
Marriage is so much more than romance and the rose-tinted vision that we tend to see it in. We think all these phrases in the vows and in the ceremony like "for life" and "as one" and "forsake all others" and all that are just words, nice thoughts… when in fact they are commitments that have serious legal and social consequences.
I love my wife to bits. I really do. We have our romantic moments, we still hold hands, there is extreme love in who brings the first cup of coffee to the other in the morning, we talk every day. She is my very best friend. For life. But we have been together for 40 years… the euphoria of the wedding day and the blue-eyed expectations of yore are long gone, replaced by the reality of what a marriage really is.
She’s the woman I ask the difficult questions. She’s the one that asks me difficult questions. We question each other over financial transactions, we discuss and agree on career moves and decisions, we neither make any major purchase unless in agreement, we have talked death, funerals, inheritance… We were in agreement early on regarding children, where to live, religion… We talked monogamy right at the start, we discussed sexual preferences and what we are into, and we respect the borders established. She’s the one that got to look up my ass to see if I had hemorrhoids or simply a burst pimple. I’m the one that held her head when being sick. We know each other’s end-of-life preference if medically incapacitated… Heck… only a couple of days she questioned my thirst – worrying about diabetes symptoms. I had the sense to not question her cooking, having dutifully eaten all of the too-salty and too-spiced chicken wing experiment she made…
We also know that our privacy is limited… It’s there – but limited to things that don’t harm the marriage. Like she can talk to her friends and I can plan my fishing trips and all that – we are not 100% into each others issues. But we both know where the boundaries are.
I also know that legally (and this varies state-by-state, country-by-country…) that she owns half of everything I own. House, cars, pension, savings… That if she goes and leases a vehicle or takes a loan or runs a multi thousand-dollar debt at a casino that I am legally just as liable as she is. That the collections won’t stop at half the dining-room table and only 4 of 8 matching chairs. That just like I could get her into serious trouble without her knowing of it, so can she to me. All the more reason that there is trust based on experience and communications – as well as verifiable trust (I do our taxes, and that tends to lay everything out at least annually).
Basically – what I’m saying – is that once you prance up to that alter in your dress that you spent hours pondering over, with the bridesmaids and grooms that took weeks to decide on, say your vows that took days to write, have that dinner and party that took weeks to decide on, go on the honeymoon that you have dreamt of for years… You better KNOW whom you are marrying and what you BOTH expect out of a marriage. Maybe spend some hours learning to know who he really is rather what picture he has presented to you. What are his values, what is his worth, what are his goals, how to HE see marriage.
Seriously seriously seriousl consider getting some premarital counselling. Two to three sessions might be enough, if for no other goal than to see if you are waling in step, and if you two are truly compatible.