Why did guy suddenly change his attitude?

Guy I'm dating suddenly changed his attitude. Before, he is very active on social media posting memes and always complaining about his lovelife or lack thereof. We've started talking 4 months ago and I noticed for the past 3 months, he was still posting a lot of memes and complaining he is still single etc. During these times, we sporadically talk.

What changed though on our end was we saw each other last July and he began to push for commitment. We keep on fighting cause I'm avoidant and he is really anxious. Suddenly, it became more serious than I expected and we have fights but we still keep coming back to each other and we miss each other.

I just want to know why he changed cause he was very active even since last year posting every 2 or 3 days. Now, he can go with only once in a week post and his post are only when we fight, he will say he's getting tired lol.

Why would he be less active already on facebook? Does it have to do with me?

Why did guy suddenly change his attitude?
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