Yes, both are grammatically correct, but they have slightly different uses: "I go to see him every chance I get." → General habit; something you regularly do. "I'm going to see him every chance I get." → Emphasizes your intention or current plan; more emotional or determined. So, it depends on whether you're describing a routine or expressing determination.

It depends. The first means that is something you habitually do. The second means in the future it will be something that you habitually do. I hope that helps! 😊