The partner of missing dog walker Nicola Bulley has said it is as though “she has vanished into thin air”.
Speaking near the scene where the mother-of-two was last seen, Paul Ansell said he will “never lose hope”, one week after she disappeared.
He also said he kept playing “every scenario” in his head “around and around” and that his focus was on supporting their two daughters.
The search is continuing for the 45-year-old, whose phone was found on a bench still connected to a work call and with her springer spaniel dog running loose.
She was last seen on 27 January at about 9.10am on a path by the River Wyre in the Lancashire village of St Michael’s on Wyre.
Ms Bulley, 45, a mortgage adviser, had just dropped her two young daughters, aged six and nine, at school.
Mr Ansell said: “I don’t know how I am coping. I don’t want to think about that. I am just focused on the girls.”
The 44-year-old engineer added: “Every single scenario comes to a brick wall. Every single one of them.
“All we are doing is sitting there going round and round and round through each scenario.
He went on: “We’re never, ever going to lose hope, of course we’re not, but it is as though she has vanished into thin air.
“It’s just insane.”
Mr Ansell also thanked the local community for their “amazing” support and said it had given the family “a great amount of comfort”.
Members of the local community on Friday stood by the side of the road holding signs bearing Ms Bulley’s photo, urging people to contact police with information.
On Thursday Ms Bulley’s heartbroken sister Louise Cunningham told Sky News: “It feels like I’m just stuck in a nightmare”.
In the interview, her family made an emotional appeal to anyone who may have seen her or knows where she is to come forward and speak to police.
Lancashire Police, who have launched a major search operation, said that despite “unanswered questions”, people should not “speculate or spread false rumours” about the disappearance.
The force said they do not believe any crime has been committed and are treating the incident as a missing person inquiry.