The University's GTA policy explicitly states that:
"GTAs should not provide pastoral support or general academic guidance (eg on module choices) to students. Departments should ensure that GTAs understand the limits of their role and know what to do if a student raises a pastoral or general academic issue with them." (Section 38 of the University of York GTA Policy.)
However, GTAs frequently report that it can be challenging to maintain this boundary. This could be because you may be closer in age to your students, and so they may perceive you as being more approachable than academic staff, or it may be due to you having more contact with them through the course of your teaching.
The guidance below outlines the core things you need to be aware of if a student discloses a need for emotional support to you. The information focuses mainly on how you can signpost the student to appropriate support while maintaining your professional boundaries.
You may also wish to refer to the University's policy on personal relationships.