After two years together my boyfriend and I are inseparable still, is this normal?

Anonymous
So my boyfriend and I have been together for two years, we were friends first for a decent time. Currently we're both no longer in contact with our shared mutual friends because they turned into back stabbers and out of nowhere started acting unfriendly towards us over nothing. Just turned into bad people and people we no longer wish to associate with causing drama etc. But before our lost friendships we saw eachother everyday anyway. Now I just want to know is it normal for couples to be inseparable? We're both 20 so it's not a puppy love situation we're more like an old married couple. but we basically live together, we both still live at home but he stays at my house everynight (my parents like us living here). And after a day's work we're dying to see eachother and miss eachother at the end of the day. Is it normal to miss your SO after being at work all day?
Updates
+1 y
The reason I'm asking is because although my brother and his girlfriend haven't been dating as long as I've been dating my boyfriend, they won't see eachother everyday. And my cousin and her boyfriend will see eachother once a week.
After two years together my boyfriend and I are inseparable still, is this normal?
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