Hi all I am relatively new to bitcoin and sent 0.1 bitcoins without paying a fee. I just assumed that the fee is added automatically. Anyway it's been 15 hours and  is still unspent with zero confirmations.
https://blockchain.info/address/18AB3AQw55DsHGwBGfVwJTGuTH98tCD6H

Will this ever be confirmed or returned to my wallet. Or lost forever?
Thanks