Even though you want your connection to be lighthearted, something always seems to drag you both down when you're together. You have a deep emotional involvement from the start, but it is a heavy one, one that doesn't always bring you a lot of pleasure. After a while, you might start to realize that you feel a sense of burden when you're with this person, one that lifts when you're apart -- and you might not even be able to pinpoint where it's coming from.
But it has a source: Your lover tries from the start of your relationship to get you to change, and the pressure from this wears on both of you after a while. It starts out subtle, and you might not even mind the minor adjustments that are being asked of you. After a while, though, you might start to feel like you can never just relax and be yourself. Your lover constantly tells you that you're not doing things right -- maybe you're not dressing right, or treating people right, or cleaning the house right or... The criticisms probably aren't huge in themselves, but they amount to a general feeling of being controlled. The funny thing about this tendency is that you actually really might need to change your behavior, and you might realize it. If you're forced to do it under pressure and criticism, instead of slowly and at your own pace, this could be a rather annoying influence to deal with.