Hi,
Long time ago (so maybe 80ish?) I saw this movie. I don't know how far to trust my remembrance, but what I think happen was:
Guy got problems, and calls his friend to meet, and they partty and alk a whole night. And they play golf in the end, an the car... I don´t know. And I think one of the possible options was, that the friend was imaginary, because he disappears in the end.

Any ideas?
Please?

Thanks,
Michael