So Eva and Jason might be getting together, does this happen (so many times) in real life, I've made a list

Corrie
Sarah Lou - Tod / Jason
Jason - Stella / Eve
Lewis - Audrey / Gail
Carla - Paul / Liam
Tracey - Nick / David
Dev - Mother / Daughter

East Enders
Anthony - Kat / Zoe
Alfie - Kat / Little Mo
Charlie Cotton - Dot / Rose
Jack - Ronnie / Roxy
Peggy - Eric / Archie
Stacy - Max / Bradley
Sharon - Phil / Grant
Kathy - Phil / Grant
Irene Terry - Sons and Daughters

Emmerdale
Charity - Chris / Zoe Tate
Adam - Mia / Ella
Cameron - Debbie / Chase
Shadrach Wife - Shadrack / Zak

Hollyoaks = Too Many to Mention

Did Ena + Albert have Siblings

That's only the tip of the iceberg where Eastenders is concerned, Tanya had both Max and Jack. Phil had his Auntie Glenda. Ian nearly slept with his own half sister and had a liaison with his cousin. Bianca threw herself at her own dad. One of the ferreiras was in a relationship with his half sister (but they retconned it so they had never slept together). Pat slept with two brothers, Pete and Kenny Beale. Cindy slept with Ian, his half brother David and his half brother Simon. Grant slept with his own mother in law.

There is many more too!

Debbie in Emmerdale has been unlucky enough to find herself embroiled in 3 different love triangles featuring close family members - her dad Cain (Jasmine), her mum Charity (Michael) and her auntie Chas (Cameron). Real Jeremy Kyle material. No wonder the girl is so messed up.