is it normal to hate every second of the day until you talk with your girlfriend?

Feeling unhappy or having negative emotions throughout the day is not necessarily normal or healthy. It could be a sign of underlying issues that you may want to address. While it is natural to feel better when connecting with loved ones, it is important to also cultivate happiness and contentment within yourself. If you find that you are consistently unhappy throughout the day, it may be helpful to explore the reasons behind your feelings and consider seeking support from a trusted friend, family member, or mental health professional.

is it normal to get intensely erect when talking or around your girlfriend

It is not uncommon for people to experience physical arousal, including erections, when they are in the presence of or engaging in intimate conversations with their romantic partners. This response is a natural part of sexual attraction. However, everyone's experiences and arousal levels vary, so what is considered "normal" can differ between individuals. It is important to communicate with your partner about your boundaries and comfort levels regarding physical intimacy and arousal. If you have concerns or questions about your sexual responses, it is always a good idea to consult with a healthcare professional for personalized advice.