I wouldn't say it's "always" a date, but what other reason would there be for this person asking you out to dinner. Do you not want it to be a date or just unsure of his intensions? Be staight forward with him and ask of his intensions. If its a date and you want it to be, than great. If it's a date and thats not what your looking for than be up front with him and let him know it can go farther than friendship.
Good Luck!
