SOLVED. Adult Time Travel or Immortality in a Subway Tunnel. [s]

[Grace]

Read this fiction book (adult) within the past 3 years (out of the NEW book section of the library)... a woman meets a man in a subway-type of tunnel and they fall in love, but in the beginning when she leaves him, she goes only when the light shining through a window hits a particular portion of the flooring and she walks into a bright light (and disappears). The story continues as she comes back and forth... is she time traveling or immortal (because she doesn't seem to age)... looking to reread this one... but can't remember the title... Thank you in advance!!

[Lobstergirl, au gratin]

Please note that new requests for forgotten books go in UNSOLVED - I moved it there.

[Stephanie]

Time After Time by Lisa Grunwald

[Grace]

THANK YOU! OMGosh.... you are right and THANK YOU again!... Going online and ordering it right now!! - thank you so much!