Lady Gaga and Taylor Kinney are hoping to keep their wedding date "a surprise".

Taylor Kinney and Lady Gaga

Taylor Kinney and Lady Gaga

The 29-year-old singer and her 34-year-old beau are planning to tie the knot at some point in the future, but 'Chicago Fire' actor Taylor refused to be drawn on any details on the ceremony.

Asked about which day they had chosen for the nuptials, Taylor said: "We'll keep it a surprise!"

Gaga and Taylor started dating in 2011 before the actor popped the question on Valentine's Day 2014.

Taylor also spoke about how he helps Gaga through more difficult times in her life, such as her recent revelation that she was raped aged 19.

He told People: "I don't prod. I don't push. I don't ask. If she wants to let something personal out, she does it on her own."

While Gaga is most famous for her incredible voice, she has also been causing a stir in the acting industry in recent months thanks to her role on 'American Horror Story: Hotel'.

Having a celebrated actor as a boyfriend has only been a help to Gaga, though, as Taylor revealed he often helps the singer practice her scenes - alongside his 'Chicago Fire' co-stars Eamonn Walker and Monica Raymund.

He continued: "There are a few scenes, whether Monica saw or Eamonn saw that they remember running and say 'kudos' and 'good job. She's really taken to it."