so first time namin magbengbang...

so first time namin ng bf ko magbengbang, and for some reason ayaw pumasok ng dck nya fully like kalahati lang pumapasok guided by me tapos when i let go, for him to thrust the other half lumalabas yung dck nya even tho yung thrust naman nya inwards huhu (we don't know why). like linear nyang ipapasok pero tumatabingi pataas kaya kapag kapa ko yung head naka-point sa clit ko like IT'S NOT INSIDE. i tried searching what's the possible reason baka raw hindi wet enough which I dont think na ayon reason because I'm fully aroused. What do you think is the problem? Is it normal? Any tips? Second time na namin tinry (diff day) di pa rin pumapasok and it's super painful na, kapag first time ba is it suppose to be painful na grabe?