<human>: We'e been together for about two years, and in most respects, I think we have a great relationship. We're likely headed towards marriage in the not too distant future, and I want that, but lately we have been fighting a lot, and inevitably my past comes up. I feel like we need to work through some things before taking next steps. 

I've had 3 serious relationships previously, with substantial stretches where I was single in between. During that time, I had a fair amount of random hookups, some that I'm not super proud of, but I was single and in my 20s and I don't think I really did anything wrong. Never mistreated or took advantage of people and it's not like I was in KISS or anything, was just young and enjoying myself. I have always been honest with her about my past when she's asked, though I don't go out of my way to talk about it. 

She is a little more conservative than me, and from a different country, which definitely complicates things. 

She is having a hard time with the fact that I have been with so many people. I understand that sentiment, and I feel terribly about it, but I also can't change the past. 

During the beginning of our relationship, there were a few times where she saw other girls messaging me. 

It was harmless "hey how are you" type of stuff (not flirtatious or anything), but that seems to bother her a whole lot more than she let on initially. I don't keep in touch with any exes or past flames at this point, and have never even thought about cheating, but lately she doesn't seem to believe me.

I honestly love this girl and want to make this work, but it's possible that there is a fundamental disconnect here.

I'm trying to be patient and considerate, but I can't lie, I'm getting frustrated feeling like I'm constantly defending myself for things out of my control.

Any advice as to how I can help us move past this?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Had a fair amount of random hookups while single in my 20s, and it's causing trust issues in current relationship.