Her passive/aggressive reactions are dictating your life and your decisions.
You're going to have to nip that in the bud.
You can either talk to her directly and face the fallout from (God forbid!!!) disappointing her that you have other things to do other than spend every second with her, or you can be a bit more low key and schedule certain time frames where you will be attending to yourself and your hobbies , etc...
so you will just not really be 'available' and she may have to eventually realize how your daily personal schedule works. And if she truly is a cool chick and loves you , she WILL support you in pursuing your interests, passions, and hobbies. But be careful of overdoing it and then ignoring her.
Dont take her for granted.
That would be a huge mistake, and if she realizes youre doing that, she may be inclined to be unsupportive thereafter.
So try not to overdo it, and then exclude her from your life. What would be the point in being in an exclusive LTR with her if you dont make time and space for her?
After all, she wants to be with her Man, not with some dude down the street, she wants to be with you. Keep that in mind.
Dont allow yourself to feel responsible for her mishandling of normal and natural relatonship dynamics.
You need to have a life outside of your relationship.
If you dont, I can guarantee your relationship will become very dull and end quicker than it should. And then she may even resent you for spending ALL your time with her, and not bringing in any new energy into the relationship. And then what??
She needs to realize that, and she also needs to get some hobbies and have some sort of interest other than the attention you give her.
We are Men...not merely attention giving toys. We also have feelings, and needs, and interests too. And we deserve to have those things in our lives.
And it should NEVER be an either/or dynamic.
If she cant handle that, this is not your personal shortcoming.
There is a lack of maturity here, and as the Man, and as the one who isnt having his needs met, you're going to have to Assert your boundaries here.
You can do it more directly, or indirectly.
You know her best, so you will have to take on the responsibility of handling this circumstance in a cool, unreactive, and gentle kind of way. She IS your partner, so just be cool and emotionally balanced. I seriously doubt she will break up with you because you're bringing your concerns to her, and if she does then maybe it's for the best.
Finally, if there is something that can satisfy both partners is doing cool, fun new things TOGETHER as a couple. If you like camping, hiking, fishing, video games, martial arts, meditation, whatever, maybe you can invite her along. You may be surprised at just how cool her company may be with you in these kinds of activities. I would defiinitely suggest adding some together time doing certain activities like the above. So you have a blended experience and experiences on your own too. A balance of these is what makes us feel fulfilled and happy.
Good luck.
Be the Man with the plan.
