ISTPs enjoy having a good time, engaging in new experiences, and being playful with their partners. Be direct as much as possible. Then forgets again. It's important to note that while these Myers-Briggs types may not seem compatible for a variety of reasons, there are exceptions to every rule.
ENTP: Go to an escape room. Each function gives the person a particular trait. Just make sure your "Debater" partner gets their space to talk about it after. Unsurprisingly, this contrasting approach can put a strain on the relationship over time. Be direct as much as possible.