I'm sorry, but this sounds so junior-high-like.
It's wonderful that you have re-connected with your friend and that you want it to be "for life". However, life holds no guarantees. He may not like you six months from now.
If this person is terrible about answering his phone, then texting is not going to go smoothly. Maybe he prefers face-to-face conversations. In re-kindling a friendship, you need to spend more time getting to know the person they are now and not the person that you've remembered that they were.
Your other friend that is getting in the way, well, that's how life goes sometimes. If the other friend is a girl, then she may be doing this because you're now interested in the other person.
So, get to know your re-kindled interest. Find out how he likes to communicate. Don't cling - it's unattractive. Find fun things to do. Good luck.
