Luke has been homeless for three years. He ended up on the streets after losing both of his parents.
It's been hard, because I've lost so much in such a short amount of time, you know.
He has found a father figure in fellow rough sleeper, Shaun. The two spend most of their days together, and Luke says he "loves him to bits".
My dad passed away last year and [Shaun] came up, actually, to meet my father. I was sleeping and as I was waking up, I heard my dad saying to him 'Just keep an eye out for my son'. And he is like a dad to me now, you know.
Addiction and homelessness don't always go hand-in-hand, but drugs are something we have heard a lot about during our filming.
Luke and Shaun are both recovering addicts and have been prescribed a substance called methadone to help them stay off heroin.
I wake up, I go and get my medication, come back. [Shaun] can do without it [for a bit longer]. He wouldn't have to pick it up today. But I have to have it every day. I don't know why.
Once you've had it, it takes, say, half an hour to get into your system. And you're fine them.
Luke and Shaun are trapped in a depressing cycle of homelessness and addiction.
There's nothing I can do. I go to the council and see what they can do... outreach do their best for us... but there's just too many homeless now.
Luke and Shaun shared their stories with ITV Cymru Wales as part of our week-long special coverage on homelessness.
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See more of ITV Cymru Wales' special coverage on homelessness here.