I agree with hunter1801, usually it's not about getting the perfect pitch. Some guitar players just bend a quarter of the note and that creates a special sound, and a tuner that aims at perfect pitches cannot help in that case. Keep hearing yourself without any background song and you'll develop a "finer ear" for bending. Altough playing along music is great (and it certainly helped most of the musicians we admire today) playing alone, (or even better recording yourself playing alone) is also essential.