I agree in part with Osuche. It is a two way street. He has a dialpad on his phone just as you do, and I'm sure his phone doesn't only take incoming calls only. On the other hand, I don't believe it's up to only you to seek him out. Yes, make him feel welcome, but he has to understand you have responsibilities now and you can't spend every weekend having drinks with him. DO give him a call on occasion. Just don't be the only one making the call.

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Some people walk in the rain, others just get wet. ~Roger Miller