Can I take wellbutrin 150 with Cymbalta (duloxetine) if im bulimic for depression?

PROBABLY NOT. There is an issue with the use of Wellbutrin (bupropion) in patients with bulimia due to a lowering of the seizure threshold. I hope that you are getting some help with a therapist as well.
Risky side effects. The combination can raise the risk of side effects including seizures. It's not a good idea unless absolutely necessary and will be closely watched. Definitely look into CBT therapy for management of both conditions - it will lessen your need for medications and may even teach you how to overcome the bulimia. Best wishes for success.