Weak erections and severe delayed ejaculation

Patient: I am 29 and get weak erections. They are stronger only when my legs are straight together and hips are clenched tightly and soon as my legs are apart(which usually happens during normal sex), my erection gets softer. Also I suffer from severe delayed ejaculation and major loss of sensation. I cannot ejaculate without masturbation. For this I tried totally abstaining from masturbation for 2 months(during which neither had any nightfall which is weird) but still no improvement in sensation. This has been since several years. I tried Kegels too. Is it venous leak?

Symptoms: Weak erections and severe delayed ejaculation