In a medium bowl, combine mango, red onion, jalapeño, cilantro, and red bell pepper. Add lime juice, olive oil, salt, and pepper. Toss gently and set aside to let the flavors meld.
Notes
Let it rest for 10–15 minutes before serving so the flavors can meld together.
Adjust the heat to taste by removing jalapeño seeds for mild salsa or adding extra for more spice.
Serve fresh for best results—the texture and brightness are at their peak right after mixing.