For starting a long distance relationship (1.5 hours apart) is taking turns visiting eachother every weekend a must? When should we move closer?

Anonymous
-I went to my hometown for a weekend a while back and an into my 10th grade lab partner. She and I talked and caught up at the pub everyone goes to in that small town. We ended exchanging compliments/contacts and made a promise to meet up again.
-We did the next 3 times I came home. Nothing serious until she decided to stay this whole weekend with me where she met my pets and saw my apartment. I am paying a coworker to watch my pets and visiting her next weekend to meet her roommate and pets.
- Im not sure how sustainable it is to keep this up when we both have responsibilities in our homes. I want to make it work and just push through but she needs to ditch her roommate/move closer or I need to move closer to my hometown. I hate to think this constant sacrifice can just end up an expensive fling or ask if we should plan too relocate to soon and scare her away.
For starting a long distance relationship (1.5 hours apart) is taking turns visiting eachother every weekend a must? When should we move closer?
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