Araneus diadematus is commonly called the European garden spider or sometimes the pumpkin spider (korsedderkopp). I presume this is the male carefully approaching the female without being eaten for dinner!
Did you know they eat the web and contents every night spinning a new one each day!

….and when you wake up in the morning and a spider has been busy at work all night with its web attached to the bed, the ceiling and a pile of clothes on the floor! Such is being closely connected with nature…

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