How do you know if you are happy or unhappy in a relationship when it’s your first serious relationship?

How do you know if you are happy in the relationship and it’s working out right? But you don’t have any experience in relationships?

so the relationship would have ended with someone who knows it’s time to end. Or is it just a normal feeling thinking the relationships are hard work?

How do you know if you are happy or unhappy in a relationship when it’s your first serious relationship?
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