The major reason is that now we are living apart. When we were young, we lived near and were together almost all of days because we had to go to the same school. There's not much we could meet and we could share common things again and again. But nowadays we meet once 6 months, so we have less common things. It doesn’t feel as fun as it used to when we hang out, so we slowly drift apart. Sometimes, newer friends just feel more comfortable.

Hi, Megan^^
Thank you for sharing.
You're right. Sometimes it can be a bit awkward because it's just not the same anymore.
_T. SHAY^^
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The major reason is that now we are living apart.
>>Correct
OR: The primary reason is that we're currently living apart. 
When we were young, we lived near and were together almost all of days because we had to go to the same school.
>>When we were young, we lived nearby and spent almost every day together because we went to the same school.
There's not much we could meet and we could share common things again and again.
>>We didn't get to meet often or share common interest like we used to.
But nowadays we meet once 6 months, so we have less common things.
>>But nowadays we meet once in six months or twice a year, so we have less common things.
It doesn’t feel as fun as it used to when we hang out, so we slowly drift apart.
>>It doesn’t feel as fun as it used to when we hang out, so we slowly drifted apart.
Sometimes, newer friends just feel more comfortable.
>>Correct
OR: Sometimes, you just feel more at ease with newer friends.