Hmm, it definitely does seem like there was a degree of comfort that was broken to start with, which could greatly enhance this problem.
Being friendly is fine, but there are certain ways to approach it. Friends are made through mutual trust, experiences and understanding, which can often take time. If you do value someone and want them to be your friend, you'll make the time and not try to rush through the process of getting to know someone.
Take care all.
