the first step to fixing a problem is acknowledging that there is one right? so first off lets be honest here
... you like this chick ,you been with her for a year and a half and her taking 3-4 for weeks vacation on the other side of the globe isnt actually exciting right?
now WHY is that?
1. the length of time, its damn near a month away, the heart grows fonder while its away right?? wrong(bad brainwashing dating advice from feminist so she could cheat on bob the beta)
your gut is telling you something is wrong , because ideally she should want to spend every minute with you, doesnt that mean you spend every minute with her? NO you shouldnt be available 24/7 but she shouldnt be ok taking these long trips away from home either. there has to be a balance to it.
2. lets be honest here, if its really far away she COULD POSSIBLY cheat and you would never find out about it.
idc how much her parents love you ...do you really think they would tell you if she cheats? no , that would be invasive in her personal relationship. from my experience , women would much rather sweep it under the rug, water under the bridge, what you dont know cant hurt you. many women take these business trips far far away , they go on these vacations, and what happens there stays there right? thats where the what happens in vegas stays in vegas thing comes from , you go there, cheat, come back . it stays in vegas right? doesnt count.(in their mind)
imo, it seems like you are in slight denial about your feelings, you may care what the guys here on SS think . '' OH IM INSECURE'' blaah blah , but the reality is, you're finna move in with this girl you been seeing for a long time, and she is taking these long trips far away, and its making you uncomfortable which it should for obvious reasons if you guys are going the EXCLUSIVE ROUTE
imo she should be including you in these trips. i feel there is a lack of boundaries or lack of understanding to where this is going on her end. again this is all based off of an exclusive idea of a relationship, you guys should be going together, if this was a casual thing , then no big deal. also if she is feeling ''trapped'' this is a very bad place to be coming from mentally imo, i wouldnt want my gf on the other side of the country , without me, after feeling ''trapped''
my honest 2 cents here.