¡Hola Allison! We normally use the verb "tardarse" in the third person as an equivalent of the English construction "to take time", but in some Latin American countries it is true that they use the full form of this verb as a reflexive, for example, "yo ME tardé cinco horas en llegar" meaning "It took ME five hours to arrive", but by this moment we are only offering Spanish from Spain, so you have to use only the third person at this point. I hope this helps. Silvia.