If she was never particularly good at responding to texts and she wasn’t attached to her phone before, don’t read too much into this. Frequent “tech problems” could be a bad sign here. If she always took good care of her phone but all of a sudden the battery dies or she isn’t getting signal, she may be lying about it.
This may not be a sign of infidelity if she just started a new job or it’s her first semester at college. If she genuinely has something taking all of her time, she may just be super busy for now.
If she’s upfront about needing time to herself to make new friends, explore new hobbies, or focus on her goal, presume she’s telling the truth. Your ears should only perk up if the schedule change is sudden and nonsensical.
This may not be a sign of cheating; she might be depressed to be away from you, or struggling to adjust to a new environment. If she seems distant right after she has moved away, it probably isn’t cheating.
There is a fringe chance that she’s embarrassed by where she lives or she always wants to come home because you live in the same place as her friends and family, but she should generally want you to come see her sometimes.
Try asking her to retell a story she told you about a week ago. If she can’t remember any of the details or she changes things about the story, she probably made it up.
If she’s openly cheating on you, her friends and acquaintances may not even know about you. This is what would cause her to be evasive and lie about who she hangs out with. If she has trouble making friends and she just moved, don’t read too much into this. She may not know a whole lot of people yet.
If your girlfriend has a lot on her plate from school or work, it might explain this. However, she should probably be relieved to talk to you if that’s the case.
If she always dresses up and posts cute selfies, don’t read anything into this now. A lot of people just like to look their best when they’re flexing on Instagram.
Don’t worry if she disappears from social media for a few days if she has just moved. She may just be getting settled in.
A long-distance relationship lacks the physical component. You cannot touch or hold hands. Or spend quality time together, like going for coffee or a walk together. So the relationship may become boring, and your partner may try to find someone else to fulfill those needs. If her complaints are well-founded, see if you two can work together to solve them. She may just need more attention, or more regular visits from you. It might be more likely that she’s cheating if she specifically critiques you as a partner on unfair grounds. If she says you never listen to her but you’ve been an exceptionally receptive partner, it’s a worrying sing.
If you two would fight roughly once every two months before you were long-distance, that should still be the case. Regular conflict is healthy and totally normal for a relationship. If the two of you don’t fight all that much, don’t worry if that hasn’t changed.
If she has always been a particularly jealous or nervous partner, this may just be her way of genuinely trying to make sure you aren’t being unfaithful. Take her personality into account on this one.
To confront her, you might say, “Look, I see you’ve been hanging out with this guy online and you’ve been really distant the past two months. Are you seeing someone else?” For a softer approach, you could ask, “Hey, I’ve noticed you seem kind of different lately, and I’m a little weirded out that you don’t want me to visit. Is something going on?” If you want a non-confrontational option, try, “I’m sure it’s all in my head, but I’ve been really worried lately that you’re cheating on me. It’s probably just the distance and the fact that I miss you, but can we talk about it?”