Short answer: Sagittarius isn't doomed to commitment issues, but this freedom-first fire sign can hesitate to lock things in. If you've felt hot-and-cold energy or last-minute pivots, you're not imagining it. Sagittarius values exploration, truth, and possibility, so pressure or vague expectations can trigger distance. Give them a compelling why and room to breathe, and commitment becomes much more likely.
The nuance: many Sagittarians commit deeply when the relationship feels like an adventure, not a cage. Be direct about timelines and needs, co-create flexible plans, and celebrate their independence while protecting your boundaries. Ask for consistent check-ins, shared goals, and honest no's. If you're Sagittarius, own your pacing, communicate when space is for resetting, not disappearing, and show up reliably in the ways you promise.