So he doesn’t have time to spend with you this weekend too! He is anyway working till midnight on weekdays! He has already missed your birthday bash; his mom-dad’s anniversary party, 3 Friday-night movies and the much-awaited get-together with old buddies!
In short, your boyfriend is a workaholic!
And if you still love him as much, you already have the first and foremost thing required to deal with a workaholic - TOLERANCE.