So my gf(f21) and I(m23) had sex for the first time yesterday. I’m 6’3 7in with 5in girth and my gf is 5’0 with a somewhat petite frame. I knew my size was gonna be a problem so I bought lube and made sure to have lots of foreplay before even trying to put it in. It helped but not so much as she still experienced pain with just the tip and only half my length. Does it get better, like does she get used to it or do I have to take more measures to make it more comfortable for her. I used a liquid based lube but is there a better or specific brand I can use? Is there certain positions that’ll help her feel less pain? I honestly feel bad as she hasn’t had problems like this before so she doesn’t know what to do besides “take it.”